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Nitrate Test Kit (90 Tests) - API
API$13.98The 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... -
pH or ORP/REDOX Probe Storage Solution - American Marine
American Marine$13.95This is the perfect fluid for the storage of any pH or ORP/REDOX Electrode. American Marine Probe Storage Fluid will keep the tip properly moist and extend the life of your probe during storage (60 mL). -
Nitrate Liquid Test Kit (Up to 90 Tests) - Fritz Aquatics
Fritz Aquatics$13.49Easy to Read Instructions Essential for a Healthy Tank Accurate in both Fresh and Saltwater About Fritz Liquid Test Kits - Nitrate Nitrate is considered the non-toxic end product of the ammonia cycle. While not directly a problem for fish... -
HI736-11 Phosphorus Ultra Low Checker® HC Calibration Check Set - Hanna Instruments
Hanna Instruments$13.00The Phosphorus Ultra Low Range Checker® HC Calibration Check Set provides a simple solution to validating the Phosphorus Ultra Low Range Checker® HC - HI736 that has a range of 0 to 200 ppb as phosphorus. This high-quality set of standards is... -
HI774-11 Phosphate Ultra Low Checker® HC Calibration Check Set - Hanna Instruments
Hanna Instruments$13.00The Phosphate Ultra Low Range Checker® HC Calibration Check Set provides a simple solution to validating the Phosphate Ultra Low Range Checker® HC - HI774 that has a range of 0.00 to 0.90 pp as phosphate. This high-quality set of standards is... -
HI755-11 Marine Alkalinity (ppm) Checker® HC Calibration Check Set - Hanna Instruments
Hanna Instruments$13.00The Marine Alkalinity Checker® HC Calibration Check Set - HI755-11 provides a simple solution to validating the Marine Alkalinity Checker® HC - HI755 that has a range of 0 to 300 ppm CaCO3. This high-quality set of standards is... -
HI774-25 Ultra Low Range Phosphate Checker Reagents - Hanna Instruments
Hanna Instruments$13.00Reagents 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... -
HI702-25 Copper High Range Checker® Reagents (25 Tests) - Hanna Instruments
Hanna Instruments$13.00The HI702-25 are high-quality reagents that are pre-measured, allowing for users to achieve fast and accurate measurements with their Copper High Range Checker® HC. These reagents follow the Bicinchoninate Method in which the reaction between... -
HI764-25 Nitrite Ultra Low Range Reagent (25 Tests) - Hanna Instruments
Hanna Instruments$13.00The HI764-25 are the replacement reagents for the HI764 Nitrite 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... -
HI736-25 Phosphorus Ultra Low Range Marine Reagent (25 Tests) - Hanna Instruments
Hanna Instruments$13.00The 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... -
HI713-25 Phosphate Low Range Checker Reagent (25 Tests) - Hanna Instruments
Hanna Instruments$13.00Extreme 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... -
Electrode Cleaning Solution (230 ml) HI7061M - Hanna Instruments
Hanna Instruments$13.00HI7061M 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... -
Electrode Storage Solution for pH/ORP (230 ml) HI70300M - Hanna Instruments
Hanna Instruments$13.00HI70300M 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... -
Marine Buffer (500 Gm) - Seachem
Seachem$12.75Raises and maintains pH at 8.3 in all saltwater aquariums Can be used safely in reef tanks Contains borate for added stability Contains magnesium to alleviate precipitation effects Marine Buffer® will safely raise marine pH to 8.3. It will... -
Calcium Liquid Test Kit - Fritz Aquatics
Fritz Aquatics$12.74Accurate in both Fresh and Saltwater Easy to Read Instructions Essential to Monitoring Proper Ionic Balance About Fritz Liquid Test Kits - Calcium Calcium (Ca2+) is vital to many biological functions. In saltwater aquariums, calcium should... -
Copper Test Kit (90 Tests) - API
API$12.48Copper Test Kit Copper – a treatment for many parasitic infections – must be monitored in an aquarium or a pond. The copper level can drop too low for the treatment to be effective, or can increase to a point that is detrimental to fish... -
pH Test Kit (100 Tests) - ASF
ASF$12.39This test kit is designed for both freshwater and saltwater aquariums, ponds, and turtle enclosures. The kit provides fast, easy, and accurate measurements. These kits include an easy to read color chart so that the results are clear... -
PhosGuard Phosphate Remover (500 mL) - Seachem
Seachem$12.26PhosGuard 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... -
HI70436M Deionized Water (230 ml) - Hanna
Hanna Instruments$12.00Deionized water for your research needs. Air-tight seal to ensure the quality of the solution. Marked with lot number and expiration date. -
MA9015 Storage Solution for pH/ORP Electrodes (230 ml) - Milwaukee
Milwaukee Instruments$12.00pH/ORP electrode storage solution. To minimize clogging and ensure fast response time, always keep the glass bulb and the junction of your pH electrode moist. Store the electrode with a few drops of MA9015 storage solution in the protective cap. -
Copper Liquid Test Kit (Up to 90 Tests) - Fritz Aquatics
Fritz Aquatics$11.99Accurate in both Fresh and Saltwater Essential when Medicating with Copper-based Treatments Measures Free and Total Copper About Fritz Liquid Test Kits - Copper Copper is commonly used in aquariums to treat external parasitic infections,... -
Nitrite Liquid Test Kit (Up to 180 Tests) - Fritz Aquatics
Fritz Aquatics$11.99Easy to Read Instructions Essential for New Tank Cycling Works in both Fresh and Saltwater About Fritz Liquid Test Kits - Nitrite Nitrite is produced continually during the ammonia cycle by nitrifying bacteria in the biological filter... -
On Sale 25%
(OVERSTOCK) (Expires 11/2025) (HI781-25) Marine Low Range Nitrate Checker Reagents (25 Tests) - Hanna Instruments
Hanna Instruments$16.00$11.99The HI781-25 are high-quality reagents that are pre-measured, allowing for users to achieve fast and accurate measurements with their HI781 Marine Nitrate Low Range Colorimeter. These reagents follow a colorimetric method in which the reaction between... -
HI-7030M Conductivity Solution, (230 mL) bottle - Hanna Instruments
$11.99Maximum accuracy is high on the agenda here at Hanna. Browse our Conductivity Calibration Solutions specifically produced for Conductivity meters and electrodes. Hanna conductivity electrodes can be calibrated in just a few minutes, wherever you are... -
AccuraSea Refractometer Calibration Solution (250 ml) - Two Little Fishies
Two Little Fishies$11.99Do you think it’s important to maintain salinity precisely? We’re with you. That’s why we created AccuraSea Seawater Reference Solution, the only calibration solution of its kind made from real seawater. It’s pure natural sea... -
PhosBond (250 mL) - Seachem
Seachem$11.50PhosBond™ is a revolutionary new product that combines the phosphate removing capabilities of both aluminum oxide and granular ferric oxide into a singular material forming a synergistic effect. It rapidly removes phosphates and silicates from... -
GH Liquid Test Kit - Fritz Aquatics
Fritz Aquatics$11.24East to Read Instructions Essential for a Healthy Tank Accurate in Freshwater About Fritz Liquid Test Kits - GH General hardness (GH) is commonly overlooked in many aquariums, but this parameter plays a very important role in your... -
Alkalinity Liquid Test Kit (Up to 150 Tests) - Fritz Aquatics
Fritz Aquatics$11.24East to Read Instructions Essential for a Healthy Tank Accurate in both Fresh and Saltwater About Fritz Liquid Test Kits - Alkalinity Carbonate hardness, or alkalinity (KH), is the measure of both carbonates and bicarbonates present in the... -
Glass Cuvettes and Caps for Checker® HC Colorimeters - set of 2 (HI731315) - Hanna Instruments
Hanna Instruments$11.00The 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... -
pH Test Kit - Salifert
Salifert$10.92If 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... -
HI717-25 Phosphate High Range Checker Reagents (40 Tests) - Hanna Instruments
Hanna Instruments$10.00The HI717-25 are the replacement reagents for the HI717 Phosphate High 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... -
HI701-25 Free Chlorine Checker Reagent (25 Tests) - Hanna Instruments
Hanna Instruments$10.00Get 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... -
pH Electrode Storage Solution - HM Digital
HM Digital$9.99PH storage solution for HM Digital’s PH-200 / PH-80 as well as other brands of pH meters. Always make sure your sensor is kept in an electrode storage solution. If dry, refill the pH meter cap with the PH-STOR storage solution. The sponge should be... -
(HI740270) 10 ml Syringe with Luer Lock HI781 part - Hanna Instruments
Hanna Instruments$9.9910 ml Syringe with Luer Lock used in Hanna HI781 Nitrate Checker -
10.00 pH Calibration Fluid (5 Pack) - Neptune Systems
Neptune Systems$9.99Neptune 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... -
7.00 pH Calibration Fluid (5 Pack) - Neptune Systems
Neptune Systems$9.99Neptune 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... -
HI70031P 1413 20 ml (10 Pack) - Hanna Instruments
Hanna Instruments$9.99Technical SpecificationsMfr #: HI70031PItem: Calibration Solution Container: 20mLType: Electric ConductivityRange: 1413 uS/cm Container: 20mLProduct DescriptionCalibration PacketConcentration 1413 Microsiemens Per... -
Digital Thermometer - Coralife
Coralife$9.99Attaches 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... -
High Range pH Test Kit (160 Tests) - API
API$9.48High Range pH Test Kit The API® High Range pH Test Kit measures pH changes in marine aquariums, aquariums with African Cichlids, and very alkaline tap water. The API® High Range pH Test Kit reads the pH of water within the high range of 7.4... -
PhosBond (100 mL) Bagged - Seachem
Seachem$9.42PhosBond™ is a revolutionary new product that combines the phosphate removing capabilities of both aluminum oxide and granular ferric oxide into a singular material forming a synergistic effect. It rapidly removes phosphates and silicates from...