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Carbonate (Alk/KH)

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Nitrate (NO3)

Nitrite (N02)

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HI98319 Salinity & Temperature Tester - Hanna

Hanna Instruments

HI98319 Salinity & Temperature Tester - Hanna

$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...
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Magnesium (MG) Test Kit - Salifert

Salifert

Magnesium (MG) Test Kit - Salifert

$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...
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Salinity Refractometer w/ Calibration Fluid - Generic

All Misc Brands

Salinity Refractometer w/ Calibration Fluid - Generic

$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)...
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Nitrate (NO3) Test Kit - Salifert

Salifert

Nitrate (NO3) Test Kit - Salifert

$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...
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Calcium (Ca) Ultra Test Kit - Salifert

Salifert

Calcium (Ca) Ultra Test Kit - Salifert

$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...
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MCP Test Kit Marine Master Care - Red Sea

Red Sea

MCP Test Kit Marine Master Care - Red Sea

$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...
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American Marine

PINPOINT ORP Monitor - American Marine

$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...
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American Marine

PINPOINT pH Probe - American Marine

$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...
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American Marine

PINPOINT pH 7.0 Calibration Fluid (5 Pack)

$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...
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American Marine

Pinpoint ORP (Redox) Calibration Fluid - American Marine

$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...
Out of stock

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...
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Phosphate (PO4) Test Kit - Salifert

Salifert

Phosphate (PO4) Test Kit - Salifert

$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...
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American Marine

PINPOINT pH 10.0 Calibration Fluid (5 Pack)

$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...
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Calcium Pro Test Refill - Red Sea

Red Sea

Calcium Pro Test Refill - Red Sea

$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...
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KH Guardian

KH Guardian Reagent

$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...
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Salifert Master Reef Testing Combo Kit - Salifert

Salifert

Salifert Master Reef Testing Combo Kit - Salifert

$99.99
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...
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Coralife

Digital Thermometer - Coralife

$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...
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KH/Alkalinity Pro Test Refill - Red Sea

Red Sea

KH/Alkalinity Pro Test Refill - Red Sea

$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...
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JW Pet

Smart Temp Magnetic Thermometer - JW Pet

$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...
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pH Test Kit - Salifert

Salifert

pH Test Kit - Salifert

$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...
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Seachem

Ammonia Alert - Seachem

$7.35 $8.75
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...
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Ammonia (NH3) Test Kit - Salifert

Salifert

Ammonia (NH3) Test Kit - Salifert

$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...
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API

Calcium Test Kit - API

$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...
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Magnesium Pro Test Refill - Red Sea

Red Sea

Magnesium Pro Test Refill - Red Sea

$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...
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Potassium Reef Test - Salifert

Salifert

Potassium Reef Test - Salifert

$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...
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Red Sea

Seawater Refractometer - Red Sea

$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...
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American Marine

PINPOINT pH 4.0 Calibration Fluid (5 Pack)

$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...
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API

Phosphate Test Kit (150 Tests) - API

$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...
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Nitrite (N02) Test Kit - Salifert

Salifert

Nitrite (N02) Test Kit - Salifert

$11.86
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...
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Seachem

Ammonia & pH Alert Combo Pack - Seachem

$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...
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API

Nitrate Test Kit (90 Tests) - API

$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...
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ELOS

Alkalinity (KH) Test Kit - Elos

$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...
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Copper Test Kit (50 Tests) - Salifert

Salifert

Copper Test Kit (50 Tests) - Salifert

$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...
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7.00 pH Calibration Fluid (5 Pack) - Neptune Systems

Neptune Systems

7.00 pH Calibration Fluid (5 Pack) - Neptune Systems

$9.75
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...
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Seachem

PhosGuard Phosphate Remover (2 L) - Seachem

$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...
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10.00 pH Calibration Fluid (5 Pack) - Neptune Systems

Neptune Systems

10.00 pH Calibration Fluid (5 Pack) - Neptune Systems

$9.75
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...
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Phosphate Pro Test Kit (PO4) - 100 Tests - Red Sea

Red Sea

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

$42.99
Red Sea’s Phosphate Pro Test Kit is an advanced colorimetric test with comparator, measuring the level of phosphate in your reef aquarium to an exceptionally high accuracy of 0.02ppm PO4. Phosphate Pro Test Kit, when used in conjunction with...
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Iodine (I2) Test Kit - Salifert

Salifert

Iodine (I2) Test Kit - Salifert

$29.30
Trust your aquarium to Salifert.This test will accurately measure the form of iodine found in seawater, iodate.  Salifert's wide range of available tests have all been designed to detect the smallest traces of certain elements, without interference...
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HI721 Iron Checker - Hanna Instruments

Hanna Instruments

HI721 Iron Checker - Hanna Instruments

$49.95
The Hanna Iron 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. Professional...
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