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Water Testing

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  • On Sale 15%
    Magnesium (Mg) Test Kit - Elos
    On Sale 15%

    Magnesium (Mg) Test Kit - Elos

    ELOS

    $25.99
    $22.09
    Mg Magnesium Water Analysis for AquariumMagnesium is a major salt in natural seawater. Contrary to its significance this element was ignored for a long time. We know today that Magnesium creates a remarkable improvement in the growth of calcareous algae...
  • On Sale 20%
    pH 10.01 Calibration Buffer 20 ml (Pack of 25) - Hanna Instruments
    On Sale 20%

    pH 10.01 Calibration Buffer 20 ml (Pack of 25) - Hanna Instruments

    Hanna Instruments

    $49.99
    $39.99
    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...
  • On Sale 15%
    (1-10 ml) Adjustable Volume Pipettor Highly Accurate Pipette
    On Sale 15%

    (1-10 ml) Adjustable Volume Pipettor Highly Accurate Pipette

    Generic

    $59.99
    $50.99
    Fully adjustable 1-10 ml pipette for accurate measuring during testing. Volume Range:1-10ml; Increment: 100μl. This 10ml Pipette's fit 10ml Four E's Scientific Tip's Digit display to allow for more accurate volume setting and easier volume...
  • On Sale 15%
    PINPOINT ORP Monitor Complete Package - American Marine
    On Sale 15%

    PINPOINT ORP Monitor Complete Package - American Marine

    American Marine

    $134.99
    $114.74
    Package includes additional 9-volt to AC Adapter Kit, 3x Additional ORP/REDOX Calibration Fluids  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...
  • 5-IN-1 Test Strips (100 CT) pH, N03, N02, KH, GH - API

    5-IN-1 Test Strips (100 CT) pH, N03, N02, KH, GH - API

    API

    $24.98
    API® 5-in-1 Aquarium Test Strips are the quick and easy way to test the 5 most important water parameters – pH, KH, GH, nitrate, and nitrite – in one easy step. Simply dip one test strip directly into the aquarium, and compare the colors...
  • On Sale 20%
    HI775 Marine Alkalinity Checker HC (Freshwater) - Hanna Instruments
    On Sale 20%

    HI775 Marine Alkalinity Checker HC (Freshwater) - Hanna Instruments

    Hanna Instruments

    $67.99
    $54.39
    The Hanna Freshwater Alkalinity 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...
  • On Sale 15%
    MW101 PH Meter - Milwaukee Instruments
    On Sale 15%

    MW101 PH Meter - Milwaukee Instruments

    Milwaukee Instruments

    $105.00
    $89.25
    The Milwaukee MW101 PRO pH meter has won fans around the world with its reliable, fast and simple operation as well as its toughness and accuracy. The MW101 delivers fast results to ±0.02 pH accuracy with two point calibration...
  • On Sale 15%
    Marine Buffer (500 Gm) - Seachem
    On Sale 15%

    Marine Buffer (500 Gm) - Seachem

    Seachem

    $12.75
    $10.84
    Raises 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...
  • On Sale 15%
    PINPOINT pH Monitor Complete Package - American Marine
    On Sale 15%

    PINPOINT pH Monitor Complete Package - American Marine

    American Marine

    $109.99
    $93.49
    Package includes additional 9-volt to AC Adapter Kit, 3x Additional 7.0 Calibration Fluids and 3x Additional 10.0 Calibration Fluid. The PINPOINT® pH Monitoris in use by thousands of customers worldwide. This affordable unit remains the only...
  • On Sale 15%
    Master Liquid Test Kit - Fritz Aquatics
    On Sale 15%

    Master Liquid Test Kit - Fritz Aquatics

    Fritz Aquatics

    $36.74
    $31.23
    Perfect for starting a new system Includes 4 Essential Test Kits Accurate in both Fresh and Saltwater About Fritz Liquid Test Kits - Master Test Kit Fritz Aquatics Master Test Kit contains four essential test kit formulas in...
  • On Sale 20%
    ORP/pH/Temperature Tester (HI98121)  - Hanna Instruments
    On Sale 20%

    ORP/pH/Temperature Tester (HI98121) - Hanna Instruments

    Hanna Instruments

    $239.99
    $191.99
    The HI98121 is a waterproof pH, ORP and temperature meter. The housing of this tester has been completely sealed against humidity and is designed to float. Electrode replacement with the stainless steel round connector means there are no pins to bend or...
  • On Sale 15%
    Calcium (CA) Reefer Test Kit 50 Tests - NYOS Aquatics
    On Sale 15%

    Calcium (CA) Reefer Test Kit 50 Tests - NYOS Aquatics

    NYOS

    $19.99
    $16.99
    CALCIUM 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 difficult due...
  • On Sale 15%
    Neutral Regulator (250g) - Seachem
    On Sale 15%

    Neutral Regulator (250g) - Seachem

    Seachem

    $8.00
    $6.80
    Neutral Regulator™ adjusts pH to neutral (pH 7.0) from either a low or high pH and maintains it there. It softens water by precipitating calcium and magnesium while removing any chlorine, chloramine, or ammonia. The use of Neutral Regulator™...
  • On Sale 20%
    (HI783-11) Marine Magnesium Certified Calibration Standard Kit
    On Sale 20%

    (HI783-11) Marine Magnesium Certified Calibration Standard Kit

    Hanna Instruments

    $24.99
    $19.99
    The HI783-11 Marine Magnesium Certified Standard Kit is used to validate the performance of the HI783 Marine Magnesium Checker HC. The kit includes one sealed cuvette with a zero-magnesium value and one cuvette that is tinted to a standard magnesium...
  • On Sale 15%
    Strontium (Sr) Test Kit - Salifert
    On Sale 15%

    Strontium (Sr) Test Kit - Salifert

    Salifert

    $33.18
    $28.20
    Trust your aquarium to Salifert. This test kit will measure ionically free strontium and complex, important for the accelerated growth of corals.  Salifert test kits are the epitome of accuracy and precision.  The sharp, contrasting color...
  • On Sale 15%
    PhosBond (1 L) - Seachem
    On Sale 15%

    PhosBond (1 L) - Seachem

    Seachem

    $35.57
    $30.23
    PhosBond™ 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...
  • On Sale 15%
    Nitrate (NO3) Test Kit - Elos
    On Sale 15%

    Nitrate (NO3) Test Kit - Elos

    ELOS

    $25.99
    $22.09
    Biological filtration is a method that uses naturally occurring nitrifying bacteria to detoxify nitrogenous wastes. One type of bacteria (Nitrosomonas spp.) converts ammonia to nitrite while another naturally occurring bacteria (Nitrobacter spp.)...
  • On Sale 15%
    MA9015 Storage Solution for pH/ORP Electrodes (230 ml) - Milwaukee
    On Sale 15%

    MA9015 Storage Solution for pH/ORP Electrodes (230 ml) - Milwaukee

    Milwaukee Instruments

    $12.00
    $10.20
    pH/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.
  • On Sale 15%
    NO2-NO3 Nitrate/Nitrite Test Professional - Tropic Marin
    On Sale 15%

    NO2-NO3 Nitrate/Nitrite Test Professional - Tropic Marin

    Tropic Marin

    $32.73
    $27.82
    Nitrate ions (NO3–) are formed from ammonium (NH4+) as the end product of the nitrification process. Nitrite (NO2–), which is highly toxic to freshwater species in particular, is produced in the first stage of the bacterial process. If the...
  • On Sale 20%
    Hanna Master Reef PRO Kit (772 Alk, 758 Calcium, 783 Magnesium, 781 LR Nitrate, 782 HR Nitrate, 713 Phosphate, 774 ULR Phosphate) Checker HC (Saltwater) - Hanna Instruments
    On Sale 20%

    Hanna Master Reef PRO Kit (772 Alk, 758 Calcium, 783 Magnesium, 781 LR Nitrate, 782 HR Nitrate, 713 Phosphate, 774 ULR Phosphate) Checker HC (Saltwater) - Hanna Instruments

    Hanna Instruments

    $475.93
    $380.74
    772 CheckerThe 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 provides...
  • On Sale 15%
    Pinpoint pH Controller - American Marine
    On Sale 15%

    Pinpoint pH Controller - American Marine

    American Marine

    $199.95
    $169.96
    American Marines PINPOINT pH Controller. PINPOINT pH Controller is an inexpensive yet rugged controller, which includes the appropriate probe and calibration fluids. This device will automate another electrical device such as a calcium reactor or...
  • On Sale 15%
    PH Alert (6 Month) -  SeaChem
    On Sale 15%

    PH Alert (6 Month) - SeaChem

    Seachem

    $8.10
    $6.89
    pH Alert Product Description pH Alert is a unique color device designed to be placed in the aquarium or filter and monitor pH continuously. A sensor changes color reversibly to alert you shifts to in pH levels between 5.8 and 8.2. No tests, no strips,...
  • On Sale 11%
    (DAMAGED BOX) HI775 Marine Alkalinity Checker HC (Freshwater) - Hanna Instruments
    On Sale 11%

    (DAMAGED BOX) HI775 Marine Alkalinity Checker HC (Freshwater) - Hanna Instruments

    Hanna Instruments

    $63.95
    $56.99
    The Hanna Freshwater Alkalinity 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...
  • On Sale 20%
    Copper High Range Checker® HC Calibration Check Set HI702-11 - Hanna Instruments
    On Sale 20%

    Copper High Range Checker® HC Calibration Check Set HI702-11 - Hanna Instruments

    Hanna Instruments

    $29.99
    $23.99
    The Copper High Range Checker® HC Calibration Check Set - HI702-11 provides a simple solution to validating the Copper High Range Checker® HC - HI702. This high-quality set of standards is manufactured in our state-of-the-art facility and...
  • On Sale 15%
    pH or ORP/REDOX Probe Storage Solution - American Marine
    On Sale 15%

    pH or ORP/REDOX Probe Storage Solution - American Marine

    American Marine

    $13.95
    $11.86
    This 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).
  • On Sale 15%
    PhosBond (500 mL) - Seachem
    On Sale 15%

    PhosBond (500 mL) - Seachem

    Seachem

    $20.93
    $17.79
    PhosBond™ 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...
  • On Sale 15%
    PhosBond (4 L) - Seachem
    On Sale 15%

    PhosBond (4 L) - Seachem

    Seachem

    $121.33
    $103.13
    PhosBond™ 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...
  • On Sale 20%
    Pure Water Tester (HI98308) - Hanna Instruments
    On Sale 20%

    Pure Water Tester (HI98308) - Hanna Instruments

    Hanna Instruments

    $89.99
    $71.99
    The HI98308 Pure Water tester is a rugged and reliable pocket-sized tester that offers quick and accurate readings. The HI98308 Pure Water tester features graphite electrodes to reduce polarization effects and an exposed temperature probe for fast...
  • On Sale 15%
    Phosphate Liquid Test Kit (Up to 150 Tests) - Fritz Aquatics
    On Sale 15%

    Phosphate Liquid Test Kit (Up to 150 Tests) - Fritz Aquatics

    Fritz Aquatics

    $14.99
    $12.74
    East to Read Instructions Essential for a Healthy Tank Accurate in both Fresh and Saltwater About Fritz Liquid Test Kits - Phosphate Excess nutrients can lead to poor water quality very quickly. If not controlled, phosphate (PO4) can...
  • On Sale 15%
    Nitrite (NO2) Test Kit - Elos
    On Sale 15%

    Nitrite (NO2) Test Kit - Elos

    ELOS

    $21.99
    $18.69
    Biological filtration is a method that uses naturally occurring nitrifying bacteria to detoxify nitrogenous wastes. One type of bacteria (Nitrosomonas spp.) converts ammonia to nitrite while another naturally occurring bacteria (Nitrobacter spp.)...
  • On Sale 15%
    Alkalinity Liquid Test Kit (Up to 150 Tests) - Fritz Aquatics
    On Sale 15%

    Alkalinity Liquid Test Kit (Up to 150 Tests) - Fritz Aquatics

    Fritz Aquatics

    $11.24
    $9.55
    East 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...
  • On Sale 15%
    Marine Buffer (4 KG) - Seachem
    On Sale 15%

    Marine Buffer (4 KG) - Seachem

    Seachem

    $73.24
    $62.25
    Raises 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...
  • On Sale 15%
    Copper (Cu) Test Kit - Elos
    On Sale 15%

    Copper (Cu) Test Kit - Elos

    ELOS

    $21.99
    $18.69
    The ELOS Copper Test Kit combines ease-of-use, with laboratory-grade precision. It can be used to detect copper or to measure residual copper levels before and after using copper cures in fish-only aquariums. Also, great for testing tap or source water...
  • On Sale 15%
    Marine Buffer (250 Gm) - Seachem
    On Sale 15%

    Marine Buffer (250 Gm) - Seachem

    Seachem

    $7.47
    $6.35
    Raises 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...
  • On Sale 12%
    KH/Alkalinity Pro-High Accuracy Titration Test kit (75 tests) - Red Sea
    On Sale 12%

    KH/Alkalinity Pro-High Accuracy Titration Test kit (75 tests) - Red Sea

    Red Sea

    $41.99
    $36.95
    Red Sea’s KH/Alkalinity Pro Test Kit is an advanced titration test, measuring the level of buffers in your reef aquarium to an exceptionally high accuracy of 0.05 meq/l (0.14 dKH).Red Sea’s Alkalinity Pro test kit enables the accurate dosing...
  • On Sale 15%
    Nitrate Liquid Test Kit (Up to 90 Tests) - Fritz Aquatics
    On Sale 15%

    Nitrate Liquid Test Kit (Up to 90 Tests) - Fritz Aquatics

    Fritz Aquatics

    $13.49
    $11.47
    Easy 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...
  • On Sale 20%
    HI70031P 1413 20 ml (10 Pack) - Hanna Instruments
    On Sale 20%

    HI70031P 1413 20 ml (10 Pack) - Hanna Instruments

    Hanna Instruments

    $15.99
    $12.79
    Technical SpecificationsMfr #: HI70031PItem: Calibration Solution    Container: 20mLType: Electric ConductivityRange: 1413 uS/cm    Container: 20mLProduct DescriptionCalibration PacketConcentration 1413 Microsiemens Per...
  • On Sale 15%
    pH600 pH Economical Pocket Tester - Milwaukee
    On Sale 15%

    pH600 pH Economical Pocket Tester - Milwaukee

    Milwaukee Instruments

    $22.00
    $18.70
    Milwaukee's economical testers are easy-to-use and low cost instruments to measure quick and reliable pH, EC or TDS values. Measuring electrical conductivity is the best way of checking the amount of salt or dissolved solids (TDS) in water. Milwaukee...