Chemistry - Water Testing - Page 1 - SaltwaterAquarium.com

Water Testing

Sub Categories

HI755-26 HI772-26 Alkalinity Checker Reagent (25 Tests) - Hanna Instruments

$8.10 $9.00 $9.00

This reagent works with both the 755 & 772 Hanna checker.  It may come with the tag 755-26 or 772-26, both reagents work with both checkers. Extreme Accuracy. Easy to Test in 4 Steps - Zero the Checker, Add a regent to your water sample,...

Add to Cart

On Sale

Hanna Instruments

HI713-25 Phosphate Low Range Checker Reagent (25 Tests) - Hanna Instruments

$8.10 $9.00 $9.00

Extreme Accuracy. Easy to Test in 4 Steps - Zero the Checker, Add a regent to your water sample, Insert the Vile in the Checker, Read the Numbered Results. BOOM EASY. ZAIR. Zero, Add, Insert, Read. Includes reagents for 25x tests. The Hanna...

Add to Cart

On Sale

Hanna Instruments

HI736-25 Phosphorus Ultra Low Range Marine Reagent (25 Tests) - Hanna Instruments

$8.10 $9.00 $9.00

The HI736-25 are the replacement reagents for the HI736 Phosphorus Ultra Low Range Checker HC. These high quality reagents are manufactured in our state-of-the-art facility and are clearly marked with the lot number and expiration date on each packet for...

Add to Cart

On Sale

Hanna Instruments

HI758-26 Marine Calcium Checker Reagents (25 Tests) - Hanna Instruments

$20.69 $22.99 $22.99

Add to Cart

Neptune Systems

Calibration Kit (ph 7.0, ph 10.0, Salinity 53000uS) - Neptune Systems

$6.85

Neptune Systems single-use pH calibration packets make calibrating your probes simple and fast. Just tear open the top, and a stick your probe into the solution when performing the calibration procedure.  This kit contains One each of PH 7, PH 10,...

Add to Cart

Neptune Systems

Apex Conductivity/Salinity Calibration Solution 53000 uS - Neptune Systems

$2.95

Use this calibration solution to calibrate your Conductivity Probe and PM2 for salinity monitoring.

Add to Cart

On Sale

Hanna Instruments

HI774-25 Ultra Low Range Phosphate Checker Reagents - Hanna Instruments

$8.10 $9.00 $9.00

Reagents for the HI774. Our HI774 Ultra Low Range Phosphate Checker will be essentially the same specifications as the HI736 Ultra Low Range Phosphorus Checker however it will not require a conversion but read directly in parts per million phosphates...

Add to Cart

On Sale

All Misc Brands

Seawater 35 ppt Refractometer Salinity Calibration Solution - 60 ML - Aquacraft

$6.29 $6.99 $6.99

Refractometer calibration solution is used to accurately calibrate your refractometer for testing natural sea water or synthetic sea water. Refractometer Calibration Solution™ 2 Fluid ounces / 60 mL Specifically manufactured for calibrating...

Add to Cart

On Sale

Hanna Instruments

HI98319 Salinity & Temperature Tester - Hanna

$62.10 $69.00 $69.00

We are pleased to announce our NEW HI98319 waterproof salinity and temperature tester! Waterproof and floats! Includes 4x of the Salinity Calibration Fluid Packets. Automatic Calibration – A 35.00 ppt solution is used for calibration and...

Add to Cart

On Sale

Hanna Instruments

HI98103 Checker pH Tester with 0.1 pH Resolution - Hanna Instruments

$26.96 $29.95 $29.95

The HI98103 Checker pH tester has been designed with many advanced features while maintaining the look and feel of the original Checker. The redesigned Checker now offers automatic calibration to one or two points, automatic buffer recognition,...

Add to Cart

On Sale

Hanna Instruments

HI772 Marine Alkalinity (dKH) Checker HC - Hanna Instruments

$44.96 $49.95 $49.95

The Hanna Marine Alkalinity (dKH) Checker® bridges the gap between simple chemical test kits and professional instrumentation. Chemical test kits have limited accuracy and resolution since they rely upon the human eye to discern differences in color...

Add to Cart

On Sale

Salifert

Magnesium (MG) Test Kit - Salifert

$17.65 $19.61 $19.61

Magnesium is present in NSW in a fairly high concentration (1300 - 1400 mg/L). Magnesium is an essential part of chlorophyll, which is necessary for photosynthesis. Without photosynthesis plants, including algae and the corals, which we usually have in...

Add to Cart

On Sale

Salifert

Nitrate (NO3) Test Kit - Salifert

$15.63 $17.37 $17.37

A too high nitrate concentration can result in unwanted algae-growth and these might irritate corals in their neighborhood. Nitrate as such also retards coral growth. The nitrate concentration in a proper functioning reef aquarium should...

Add to Cart

On Sale

Hanna Instruments

Electrode Cleaning Solution (230 ml) HI7061M - Hanna Instruments

$10.80 $12.00 $12.00

HI7061M is a general purpose cleaning solution that can be used for a variety of applications. Electrodes can become dirty from use and will produce inaccurate results even as they read correctly in a pH buffer. Hanna’s cleaning solutions eliminate...

Add to Cart

On Sale

Hanna Instruments

Hanna HI758 Marine Calcium Checker HC (Saltwater) - Hanna Instruments

$44.96 $49.95 $49.95

Add to Cart

On Sale

Out of Stock

Hanna Instruments

Electrode Storage Solution for pH/ORP (230 ml) HI70300M - Hanna Instruments

$10.80 $12.00 $12.00

HI70300M is a storage solution prepared with reagent grade chemicals that can be used to ensure optimum performance of your pH and ORP electrodes. It is necessary to store a pH electrode in a solution in order to keep the glass membrane of the pH...

Out of stock

On Sale

Out of Stock

$Salinity Refractometer w/ Calibration Fluid - Generic$

All Misc Brands

Salinity Refractometer w/ Calibration Fluid - Generic

$26.96 $29.95 $29.95

It is designed for testing the concentration of salt water and brine and used for quality control in research and clinical laboratories and marine industry. Its scale provides a direct reading of the specific gravity and concentration (part per Thousand)...

Out of stock

Red Sea

Reef Foundation Pro Multi Test Kit (Ca,Alk,Mg) Calcium, Magnesium & Alkalinity - Red Sea

$59.99

Red Sea’s Reef Foundation Pro Test Kit includes high accuracy titration tests for the accurate measurement of the elements calcium, magnesium and alkalinity (KH) which are the basic foundation elements of coral skeletons. All of these...

Add to Cart

On Sale

Out of Stock

Triton

Triton ICP-OES Water Test w/Prepaid Shipping Label - Triton Labs

$44.10 $49.00 $49.00

Now Includes a Prepaid USPS First Class Shipping Label + Testing is Now Done in the USA! The results of this test provide you with the most detailed analysis of marine aquarium water you've ever seen, enabling you to understand exactly what's missing,...

Out of stock

On Sale

Salifert

Carbonate Hardness & Alkalinity (KH/ ALK) Test Kit - Salifert

$14.81 $16.46 $16.46

Calcium alone cannot form the skeletal material of corals and allow calcareous algae to grow. Some other substances are needed as well. A few other constituents are carbonate and bicarbonate. These two substances also have a major impact on the...

Add to Cart

ATI

ATI ICP-OES Complete Water Test Kit (w/ Prepaid Shipping Label) - ATI

$44.95

This is the only ICP Test Kit currently on the market that includes the prepaid return shipping label to send the samples in.  Just pop it in the mail box. With the ARCOS II ICP-OES machine, we have chosen an analyser of the highest in its class...

Add to Cart

On Sale

Salifert

Calcium (Ca) Ultra Test Kit - Salifert

$16.93 $18.81 $18.81

Calcium is a major constituent of calcareous algae, skeletal material of hard corals and the skeletal needles of soft/leather corals. Calcium also fulfills many biological functions.Quite often a too low calcium concentration retards coral and calcareous...

Add to Cart

On Sale

Red Sea

MCP Test Kit Marine Master Care - Red Sea

$53.99 $59.99 $59.99

Easy-to-use tests for the accurate monitoring of all of the important parameters during the biological maturation of marine and reef aquariums NH3/NH4 | NO3 | NO2 | pH | KH Red Sea Marine Care Test Kit is Complete multi-test pack including all of...

Add to Cart

On Sale

Hanna Instruments

Waterproof Pocket pH Tester with 0.1 Resolution - pHep® (HI98107) - Hanna Instruments

$35.96 $39.95 $39.95

The HI98107 pHep® is an easy-to-use pH water tester that makes monitoring water quality simple. This accurate pH tester features 0.1 resolution with automatic two-point calibration and temperature compensation in a single, portable, pocket device...

Add to Cart

ICP Analysis

ICP Water Analysis Single Test - 33 Elements - ICP-Analysis

$29.99

ICP Test results are emailed directly to you 24 hours after the water sample is received!  Speed. ICP Test for the Following 33 Elements: Aluminum, Arsenic, Barium, Beryllium, Boron, Cadmium, Calcium, Cesium, Chlorine, Chromium, Cobalt,...

Add to Cart

On Sale

Hanna Instruments

Hanna Master Reef Test Kit (758 Calcium, 755 Alkalinity, 713 Phosphate) Checker HC (Saltwater) - Hanna Instruments

$134.87 $149.85 $149.85

755 Checker The HI755 Checker® HC (Handheld Colorimeter) provides a simple, accurate and cost effective way to measure alkalinity. Crucial in marine environments, alkalinity provides both the carbonate ion required for calcium carbonate skeletal...

Add to Cart

On Sale

Hanna Instruments

Electrode Storage Solution for pH/ORP (500 mL) HI70300L - Hanna Instruments

$15.75 $17.50 $17.50

HI70300L is a storage solution prepared with reagent grade chemicals that can be used to ensure optimum performance of your pH and ORP electrodes. It is necessary to store a pH electrode in a solution in order to keep the glass membrane of the pH...

Add to Cart

On Sale

Hanna Instruments

Hanna HI736 Phosphorus Ultra Low Range Checker HC (Saltwater) - Hanna Instruments

$44.96 $49.95 $49.95

The HI736 Checker® HC (Handheld Colorimeter) provides a simple, accurate and cost effective way to measure phosphorus in marine systems including reef tanks. Phosphorus is an important parameter to measure in aquaculture and aquariums; levels that...

Add to Cart

On Sale

Hanna Instruments

Hanna HI713 Phosphate Low Range Checker HC (Saltwater) - Hanna Instruments

$44.96 $49.95 $49.95

Add to Cart

On Sale

Hanna Instruments

HI774 Ultra Low Range Phosphate Checker (Saltwater) - Hanna Instruments

$44.96 $49.95 $49.95

Our HI774 Ultra Low Range Phosphate Checker will be essentially the same specifications as the HI736 Ultra Low Range Phosphorus Checker however it will not require a conversion but read directly in parts per million phosphates compared to parts per...

Add to Cart

On Sale

Hanna Instruments

pH 7.01 Calibration Buffer 20 ml (Single Pack) - Hanna Instruments

$1.34 $1.49 $1.49

HI70007P is a premium quality pH 7.01 calibration buffer solution. Each sachet has the lot number and expiration date stamped on it and is made of light block foil ensuring freshness each time one is opened. Hanna’s line of calibration buffers have...

Add to Cart

On Sale

Hanna Instruments

Checker Plus pH Tester (HI98100) Plus - Hanna Instruments

$36.90 $41.00 $41.00

The HI98100 Checker Plus is the next generation of the original Hanna Checker pH tester. The Checker is the most popular pH meter in the world with over 1 million meters used since its introduction in 1991. From students to researchers, the Checker has...

Add to Cart

On Sale

American Marine

PINPOINT pH Probe - American Marine

$34.19 $37.99 $37.99

The PINPOINT® pH Electrode equals and exceeds lab quality by both specif cation and design.  The PINPOINT® pH Electrode has been designed as the most rugged, precise and full-featured probe offered to both the clinical lab and aquaculture...

Add to Cart

On Sale

American Marine

PINPOINT ORP Monitor - American Marine

$103.49 $114.99 $114.99

PINPOINT® ORP Monitor will measure the ORP (oxidation-reduction potential, or REDOX) of your system. It is popular with those who use ozone gas or potassium permanganate as an artificial oxidation agent in fresh or saltwater. It is also popular for...

Add to Cart

On Sale

Hanna Instruments

PH Calibration Buffer (Combo Pack) 4.0, 7.0, 10.0 - Hanna Instruments

$3.95 $4.39 $4.39

HI70004P/H17007P/HI0010P are premium quality pH 4.01/7.01/10.01 calibration buffer solutions. Each sachet has the lot number and expiration date stamped on it and is made of light block foil ensuring freshness each time one is opened. Hanna’s line...

Add to Cart

Red Sea

Nitrate Pro (NO3) High Definition Comparator Test Kit - 100 Tests - Red Sea

$26.99

Red Sea’s Nitrate Pro Test Kit is an advanced colorimetric test with comparator, measuring the level of nitrate in your reef aquarium to an exceptionally high accuracy of 0.12ppm NO3. Nitrate Pro Test Kit , when used in conjunction...

Add to Cart

On Sale

American Marine

PINPOINT pH 7.0 Calibration Fluid (5 Pack)

$5.36 $5.95 $5.95

PINPOINT® High-Precision pH Calibration Fluids come in plastic envelope packets and are extremely accurate and field portable. Each packet contains ample fluid for calibration (about 30 ml). There is a free sample of these included with each...

Add to Cart

On Sale

Hanna Instruments

Hanna HI755 Marine Alkalinity Checker HC Alk (Saltwater) - Hanna Instruments

$44.96 $49.95 $49.95

Add to Cart

On Sale

Hanna Instruments

Hanna Master Reef Test Kit (758 Calcium, 772 DkH, 713 Phosphate) Checker HC (Saltwater) - Hanna Instruments

$134.87 $149.85 $149.85

772 Checker The HI772 Checker®HC (Handheld Colorimeter) provides a simple, accurate and cost effective way to measure alkalinity in degrees of calcium hardness, commonly abbreviated as dKH. Critical to marine environments, alkalinity not only...

Add to Cart

On Sale

Hanna Instruments

Glass Cuvettes and Caps for Checker® HC Colorimeters - set of 2 (HI731315) - Hanna Instruments

$7.20 $8.00 $8.00

The HI731315 are spare glass cuvettes and plastic caps used with the HI7XX Checker® HC colorimeters. Each cuvette has a 10 ml level mark to measure the appropriate volume. The HI731315 includes 2 cuvettes and 2 caps. 10 ml level mark for...

Add to Cart

On Sale

American Marine

Pinpoint ORP (Redox) Calibration Fluid - American Marine

$4.46 $4.95 $4.95

Another American Marine first. ORP/REDOX calibration fluid. With a precise measurement of 400mV this calibration fluid is included with every PINPOINT® ORP Monitor and PINPOINT® ORP Controller. Occasional retesting with this fluid will keep your...

Add to Cart

On Sale

Hanna Instruments

Electrode Cleaning Solution (500 ml) HI7061L - Hanna Instruments

$12.60 $14.00 $14.00

HI7061L is a general purpose cleaning solution that can be used for a variety of applications. Electrodes can become dirty from use and will produce inaccurate results even as they read correctly in a pH buffer. Hanna’s cleaning solutions eliminate...

Add to Cart

On Sale

Salifert

Salifert Core Alkalinity Calcium Magnesium Combo Test Kit - Salifert

$41.39 $45.99 $45.99

Add to Cart

On Sale

Salifert

Phosphate (PO4) Test Kit - Salifert

$17.65 $19.61 $19.61

Phosphate also blocks or retards the growth of corals and calcareous algae. One of the scientific studies shows that a phosphate concentration higher than 0.05 mg/L decreases the growth of calcareous algae by 90%! Washing fish food, which is a rich...

Add to Cart

Milwaukee Instruments

Digital Seawater Refractometer MA887 - Milwaukee

$114.00

This refractometer does not come with a case or battery. The new Milwaukee MA887 Seawater Digital Refractometer encompasses 3 different types of user selected scales for the measurement of seawater providing for a much more precise evaluation. Each...

Add to Cart

On Sale

American Marine

PINPOINT pH 10.0 Calibration Fluid (5 Pack)

$5.36 $5.95 $5.95

Add to Cart

On Sale

American Marine

Pinpoint pH Calibration Fluid Kit - pH 4.0, 7.0, 10.0 - American Marine

$4.46 $4.95 $4.95

PINPOINT® High-Precision pH Calibration Fluids come in plastic envelope packets and are extremely accurate and field portable. Each packet contains ample fluid for calibration (about 30 ml). There is a free sample of these included with each...

Add to Cart

On Sale

Hanna Instruments

pH 10.01 Calibration Buffer 20 ml (Single Pack) - Hanna Instruments

$1.34 $1.49 $1.49

HI70010P is a premium quality pH 10.01 calibration buffer solution. Each sachet has the lot number and expiration date stamped on it and is made of light block foil ensuring freshness each time one is opened. Hanna’s line of calibration buffers...

Add to Cart

On Sale

Seachem

Ammonia Alert - Seachem

$6.62 $8.75 $7.35

Ammonia Alert™ is an innovative color device for continuously detecting and monitoring toxic free ammonia. A sensor changes reversibly from yellow to green to blue, relative to the ammonia concentration. No test kits, chemicals, or procedures are...

Add to Cart

On Sale

Hanna Instruments

Hanna HI702 High Range Copper Checker (Saltwater) - Hanna Instruments

$44.96 $49.95 $49.95

The HI702 Checker®HC (Handheld Colorimeter) is a simple, accurate, and cost effective way to measure copper in your saltwater aquarium. Designed as a more accurate alternative to chemical test kits, the HI702 provides quick, accurate results in a...

Add to Cart

Neptune Systems

7.00 pH Calibration Fluid (Single Pack) - Neptune Systems

$1.95

Neptune Systems single-use pH calibration packets make calibrating your pH probe simple and fast. Just tear open the top, and a stick your probe into the solution when performing the calibration procedure.  Over the course of a couple months, it is...

Add to Cart

On Sale

JW Pet

Smart Temp Magnetic Thermometer - JW Pet

$5.36 $5.95 $5.95

JW Pet Company Smart temp Thermometer Aquarium Accessory Large : JW Fusion Smart Temp Thermometer features a unique magnetic system that securely holds the thermometer in place inside of the aquarium with a magnet on the outside of the glass. It ranges...

Add to Cart

On Sale

Red Sea

Calcium Pro Test Refill - Red Sea

$16.19 $17.99 $17.99

Refill contains all reagents used in the Red Sea calcium test kitCalcium, an essential component in the building of coral skeletons, is constantly depleted from the aquarium and needs to be monitored on a regular basis. Calcium Pro is an advanced calcium...

Add to Cart

On Sale

Hanna Instruments

pH 4.01 Calibration Buffer 20 ml (Single Pack) - Hanna Instruments

$1.34 $1.49 $1.49

HI70004P is a premium quality pH 4.01 calibration buffer solution. Each sachet has the lot number and expiration date stamped on it and is made of light block foil ensuring freshness each time one is opened. Hanna’s line of calibration buffers have...

Add to Cart

On Sale

API

Calcium Test Kit - API

$8.99 $9.99 $9.99

Calcium Test Kit Calcium is one of the most important elements in a reef aquarium. Reef invertebrates such as corals, crustaceans, mollusks and even some types of encrusting algae need calcium to grow and remain healthy. Over time, calcium levels drop...

Add to Cart

On Sale

Coralife

Digital Thermometer - Coralife

$8.99 $9.99 $9.99

Attaches to aquarium via small suction cup    3 foot long temperature probe for large size aquariums    Battery included    Ideal for aquariums and terrariums    Readings to 0.1-degrees...

Add to Cart

On Sale

Red Sea

KH/Alkalinity Pro Test Refill - Red Sea

$16.19 $17.99 $17.99

Reagent alkalinity pro refill test kit is an advanced titration test Measuring the level of buffers in reef aquarium to an exceptionally high accuracy of 0.05 meq/l (0.14 dkh) This test refill replenishes KH/alkalinity pro test kit with sufficient...

Add to Cart

Neptune Systems

10.00 pH Calibration Fluid (Single Pack) - Neptune Systems

$1.95

Add to Cart

On Sale

API

Phosphate Test Kit (150 Tests) - API

$8.99 $9.99 $9.99

Phosphate can enter your aquarium through tap water, fish waste, and decaying organics such as uneaten food and dead algae.   Excess phosphate contributes to unsightly algae blooms.   This kit tests phosphate levels from 0 to 10 ppm in...

Add to Cart

On Sale

Salifert

Ammonia (NH3) Test Kit - Salifert

$12.59 $13.99 $13.99

For Fresh and Saltwater Ammonia and ammonium are substances which should be converted rapidly into nitrite followed by nitrate and nitrogen gas.If this does not happen then the aquarium is not fully cycled or biological processes are not proceeding as...

Add to Cart

On Sale

Salifert

Salifert Master Reef Testing Combo Kit - Salifert

$80.99 $89.99 $89.99

Six Salifert Professional Test Kits Includes Calcium, Nitrate, Phosphate, pH, Alkalinity & Magnesium Includes all the Core parameters of any Saltwater Aquarium/Marine Reef Tank Salifert Nitrate Test Kit - 50 Tests, Salifert Calcium Test...

Add to Cart

On Sale

Out of Stock

KH Guardian

KH Guardian Reagent

$31.49 $34.99 $34.99

Concentrated reagent for the KH Guardian Alkalinity Monitor. Each 35g(CC) packet makes 1500ml of reagent. The KH Guardian reagent is a special concentrated formulation to ensure the accuracy of the testing and safety of the reagent that goes back into...

Out of stock

On Sale

API

Nitrate Test Kit (90 Tests) - API

$8.99 $9.99 $9.99

The API Nitrate Test Kit will allow you to accurately and easily measure the nitrate level and provides steps to remove it. Kit includes 2 liquid droppers, instructions on how to test and correct water conditions, a glass test tube, and 2 colors charts...

Add to Cart

On Sale

Salifert

pH Test Kit - Salifert

$9.83 $10.92 $10.92

If the pH is too low then the cause may be a too low alkalinity and/or insufficient aeration. A low pH can be corrected by improving aeration and by increasing the alkalinity to NSW (Natural seawater) value or upto approx 25% above NSW levels. The...

Add to Cart

On Sale

Red Sea

Magnesium Pro Test Refill - Red Sea

$16.19 $17.99 $17.99

Red Sea’s Magnesium Pro Test Kit is an advanced titration test, measuring the level of magnesium in your reef aquarium to an exceptionally high accuracy of 20 ppm. The Magnesium Pro Test test kit enables the accurate dosing of Red Sea’s...

Add to Cart

Milwaukee Instruments

Digital Seawater Refractometer MA887 w/Protective Case - Milwaukee

$136.00

This refractometer does come with a black or blue protective case. The new Milwaukee MA887 Seawater Digital Refractometer encompasses 3 different types of user selected scales for the measurement of seawater providing for a much more precise evaluation...

Add to Cart

On Sale

Hanna Instruments

35 ppt Salinity Calibration Solution Packs HI70024P (25 x 20 mL) - Hanna Instruments

$22.95 $25.50 $25.50

HI70024P is a premium quality 35.00 ppt salinity calibration solution that is NIST traceable and contained in portable single-use sachets. Each sachet has the lot number and expiration date stamped on it and is made of light block foil ensuring...

Add to Cart

On Sale

Hanna Instruments

Hanna HI764 Nitrite Ultra Low Range Checker HC (Saltwater) - Hanna Instruments

$44.96 $49.95 $49.95

Nitrification is the biological oxidation of ammonia (ammonium ion) into nitrite followed by the oxidation of the nitrites to nitrates. The first step of this 2-step process is carried out in an aquarium by nitrifying bacteria. During this quick process,...

Add to Cart

Neptune Systems

Apex Lab Grade Salinity Probe - Neptune Systems

$124.95

Start measuring salinity in your tank and get alerts when out of range. Buy this probe if you are: Replacing an old probe. Adding salinity monitoring to your system via a PM2.

Add to Cart

Neptune Systems

Apex Conductivity/Salinity Calibration Solution 53000 uS (5 Pack) - Neptune Systems

$14.95

Use this calibration solution to calibrate your Conductivity Probe and PM2 for salinity monitoring. (5 Pack)

Add to Cart

On Sale

Hanna Instruments

HI701-25 Free Chlorine Checker Reagent (25 Tests) - Hanna Instruments

$8.10 $9.00 $9.00

Get your replacement reagents for your HI701 Free Chlorine Checker® HC today. These high-quality reagents are manufactured in our state-of-the-art facility and are clearly marked with the lot number and expiration date on each packet for...

Add to Cart

On Sale

Out of Stock

Salifert

Potassium Reef Test - Salifert

$16.93 $18.81 $18.81

Salifert test kits have been trusted by discerning reefers for years for their ease of use and reliability.  Many reefers will report loss of coloration in corals when potassium level start to drop below 360 ppm. Potassium levels in natural...

Out of stock

NYOS

Nitrate (NO3) Reefer Test Kit 40 Tests - NYOS Aquatics

$24.99

NITRATE REEFER NYOS® REEFER test kits - taking measurements at the laboratory level at an attractive price Water properties as close to nature are the key for every aquarium's success. However, monitoring relevant parameters in seawater is...

Add to Cart

On Sale

Out of Stock

Hanna Instruments

HI7007L 7.01 pH Calibration Buffer Solution, (500 ml) Bottle - Hanna Instruments

$15.75 $17.50 $17.50

HI7007 is a premium quality pH 7.01 technical calibration buffer that is NIST traceable and supplied with a Certificate of Analysis. Hanna calibration buffers have the lot number and expiration date clearly marked on the label and are air tight with a...

Out of stock

On Sale

Fauna Marin

NO2 + NO3 Nitrate/Nitrite AquaHome Precision REFILL Kit (Reef Bot) - Fauna Marin

$26.96 $29.95 $29.95

This is the REFILL Kit, there are no reference materials or case. The Fauna Marin N02 + NO3 Test is very high-resolution and can determine the nitrate/nitrite concentration with a particularly high accuracy in the low concentration range. The...

Add to Cart

On Sale

Salifert

Nitrite (N02) Test Kit - Salifert

$13.49 $14.99 $14.99

Features:Nitrite is a substance that is toxic to fish and invertebrates.It is a misconception that once a tank is through its cycle (first 3 or 4 weeks) that nitrite has vanished.Many nitrite test kits suffer from interference by amines (such as...

Add to Cart

On Sale

Red Sea

Phosphate Pro Test Refill (PO4) - 100 Tests - Red Sea

$20.69 $22.99 $22.99

Reagent refill for Red Sea Phosphate Pro Test Kit. Enough reagent for 100 tests. Red Sea reagent refills make this line of test kits one of the most affordable high quality test kits available.

Add to Cart

On Sale

Red Sea

Seawater Refractometer - Red Sea

$53.99 $59.99 $59.99

Main features of Red Sea’s Seawater Refractometer include:Directly reads the absolutesalinity ofseawaterat25°C/77 0F ( No need for seawater or temperature compensation factors)Specifically designed for the ionic content of seawater (NSW) for...

Add to Cart

On Sale

American Marine

PINPOINT pH 4.0 Calibration Fluid (5 Pack)

$5.36 $5.95 $5.95

Add to Cart

Neptune Systems

7.00 pH Calibration Fluid (5 Pack) - Neptune Systems

$9.75

Add to Cart

Neptune Systems

10.00 pH Calibration Fluid (5 Pack) - Neptune Systems

$9.75

Add to Cart

On Sale

Seachem

Ammonia & pH Alert Combo Pack - Seachem

$9.89 $10.99 $10.99

No strips, no tests, just constant readings. Now Ammonia Alert and pH Alert come together! Ammonia Alert and pH Alert employ Seachem Sensor Technology; a sensor changes color reversibly to alert you to shifts in ammonia levels and shifts in pH...

Add to Cart

On Sale

Hanna Instruments

HI73127 Spare Electrode For Testers - Hanna Instruments

$53.99 $59.99 $59.99

Spare tester electrode. Compatible with: HI 98129, and HI 98130 Combo multi-parameter testers, HI 98127 and HI 98128 pHep testers, and HI 98121 ORP tester.  

Add to Cart

On Sale

Hanna Instruments

HI1271 Replacement Spare pH Electrode for HI98100 - Hanna Instruments

$18.00 $20.00 $20.00

The HI1271 is the replacement pH electrode for the HI98100, HI98103, and HI98115 Checker pH meters. The HI1271 is a single junction pH electrode that has a slim 8 mm polypropylene body that easily fits into test tube and other small sized vessels...

Add to Cart

On Sale

Seachem

PhosGuard Phosphate Remover (2 L) - Seachem

$28.79 $31.99 $31.99

PhosGuard is spherical. Its shape allows for maximum water flow through the media. Granular phosphate removers can become compacted, dramatically limiting their capacity to remove phosphate. If the media can’t come into contact with the water, it...

Add to Cart

On Sale

Hanna Instruments

Checktemp® 1 Digital Thermometer (HI98509) - Hanna Instruments

$35.10 $39.00 $39.00

The Checktemp® 1 Digital Thermometer - HI98509 is a high-accuracy thermometer with a 1 m (3.3’) flexible, silicone cable connecting the meter and the stainless steel probe. The sharp-tip penetration probe easily lances semi-solid products...

Add to Cart

On Sale

Out of Stock

Red Sea

Trace Colors PRO - Multi Test Kit Iodine/Potassium/Iron - Red Sea

$53.99 $59.99 $59.99

Coral Colors Test kit (I,K,Fe): combines 3 individual tests in one easy-to-use kit for the precise dosing of Coral Colors A, B & C supplements. Test Name Element Accuracy Range Test type No. of Tests Iodine...

Out of stock

Neptune Systems

Apex PM2 - Salinity, Temperature, I/O Expansion Module - Neptune Systems

$84.95

Maintaining consistent salinity in your aquarium is key to the well being of every organism inside it. And, as busy as we sometimes are, we don’t even realize our parameters are out of whack until it’s too late. With this module, your Apex...

Add to Cart

On Sale

API

Saltwater Master Test Kit (High Range pH, Ammonia, Nitrite, Nitrate) - API

$26.99 $29.99 $29.99

Saltwater Master Test Kit - A complete kit for testing marine aquarium water. Tests water four ways to protect marine fish and invertebrates from dangerous water conditions. Kit includes tests for: High Range pH, Ammonia, Nitrite, Nitrate, plus four test...

Add to Cart

On Sale

Out of Stock

ELOS

Alkalinity (KH) Test Kit - Elos

$16.19 $17.99 $17.99

KH Alkalinity - Carbonate Hardness Water AnalysisAlkalinity is essentially a means of quantifying the stability of pH in a solution, such as aquarium water. It is a measure of the concentration of various negatively charged ionic compounds (anions) such...

Out of stock

On Sale

Hanna Instruments

pH 7.01 Calibration Buffer 20 ml (Pack of 10) - Hanna Instruments

$12.95 $14.39 $14.39

Add to Cart

On Sale

Salifert

Copper Test Kit (50 Tests) - Salifert

$15.27 $16.97 $16.97

This test can be used to measure any ionic copper in your source water or to monitor copper levels during parasite treatments. The test kit includes a test cylinder and reagent, plus a color chart to measure the copper, accurate to 0.05 PPM. It can be...

Add to Cart

On Sale

Hanna Instruments

pHep®+ Waterproof Pocket pH Tester with 0.01 pH Resolution (HI98108) - Hanna Instruments

$44.96 $49.95 $49.95

The HI98108 pHep+® pH tester provides high accuracy measurements in a rugged pocket-sized design. This ph tester features an exposed temperature sensor for automatic temperature compensated readings. The simple, two-button operation and large...

Add to Cart

On Sale

Hanna Instruments

HI772-11 Marine Alkalinity (dKH) Checker® HC Calibration Check Set - Hanna Instruments

$18.00 $20.00 $20.00

The Marine Alkalinity (dKH) Checker® HC Calibration Check Set - HI772-11 provides a simple solution to validating the Marine Alkalinity Checker® HC - HI772 that has a range of 0.0 to 20.0 dKH. This high-quality set of standards is...

Add to Cart

On Sale

API