null

Chemistry

Water chemistry is one of the most important engines of the aquarium. Chemistry governs every factor inside the aquarium & directly effects the inhabitants. 

alk-button2.jpg ca-button.jpg mg-button.jpg

Filters
  • On Sale 15%
    Reef Strontium (500mL) - Seachem
    On Sale 15%

    Reef Strontium (500mL) - Seachem

    Seachem

    $11.33
    $9.63
    Strontium occurs in natural seawater at a concentration of about 8 to 10 mg/L. It is chemically very similar to calcium, and many organisms incorporate it in their skeletons along with calcium. Its addition to reef aquariums aids the growth of corals,...
  • On Sale 15%
    Restor Liquid Coral Tissue Nutritional Supplement (250 ML) - Brightwell
    On Sale 15%

    Restor Liquid Coral Tissue Nutritional Supplement (250 ML) - Brightwell

    Brightwell Aquatics

    $10.21
    $8.68
    Overview Encourages health, growth, reproduction, and vibrant coloration. Provides important nutrients to corals and their allies during periods of stress inducedby changes in lighting and/or prolonged exposure to excessive water temperature...
  • On Sale 15%
    Clear FX PRO (450 ml) - Blue Life USA
    On Sale 15%

    Clear FX PRO (450 ml) - Blue Life USA

    Blue Life USA

    $45.50
    $38.68
    CLEAR FX PRO is the most advanced all-in-one filtration media available on the market. Our cutting edge technology is compatible with both fresh and saltwater aquariums of all sizes. The easy to use media is the most comprehensive and reliable...
  • HI-7030L Conductivity Solution, (500 mL) bottle - Hanna Instruments

    HI-7030L Conductivity Solution, (500 mL) bottle - Hanna Instruments

    $13.99
    Maximum 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...
  • On Sale 15%
    Razor Marine System Cleaner, Coral Safe (16 oz - 500 ml) - Brightwell
    On Sale 15%

    Razor Marine System Cleaner, Coral Safe (16 oz - 500 ml) - Brightwell

    Brightwell Aquatics

    $18.19
    $15.46
    Unique Marine Systemic System Cleaner designed to target and clean surfaces of live rock, coral decorations and tank walls Overview Complex systemic cleaning polymer product, specifically formulated to clean aquarium live rock surfaces and...
  • On Sale 15%
    Iodine (I2) Test Kit - Salifert
    On Sale 15%

    Iodine (I2) Test Kit - Salifert

    Salifert

    $29.30
    $24.91
    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...
  • On Sale 15%
    Boost pH+ Increaser (500 ml) - Brightwell
    On Sale 15%

    Boost pH+ Increaser (500 ml) - Brightwell

    Brightwell Aquatics

    $14.99
    $12.74
    Boost pH+ High Range pH Increaser, raises pH only without increasing alkalinity or calcium (in tanks already having a proper dKH) High range pH increaser for all marine aquaria, Allows maintaining a pH of 8.3, 8.4 or 8.5 in difficult...
  • On Sale 15%
    Reef Advantage Calcium (1KG) - Seachem
    On Sale 15%

    Reef Advantage Calcium (1KG) - Seachem

    Seachem

    $26.74
    $22.73
    Reef Advantage Calcium™ is a non-caustic (pH 8.3–8.6) optimized blend of ionic calcium designed to restore and maintain calcium to levels found in natural seawater. Calcium and carbonates are essential to all coral growth. If either becomes...
  • On Sale 15%
    Kalk+2 Kalkwasser Supplement w/Trace (225 gm - 1/2 lb) - Brightwell
    On Sale 15%

    Kalk+2 Kalkwasser Supplement w/Trace (225 gm - 1/2 lb) - Brightwell

    Brightwell Aquatics

    $10.99
    $9.34
    Overview  • Contains calcium, strontium, and magnesium in the same ionic ratios found in aragonite. This unique feature increases the usefulness of Kalk+2 to reef-building invertebrates such as corals, clams, calcareous algae, etc...
  • On Sale 15%
    Waste Away Time Release Gels Marine (100 Gallon) - Dr Tims Aquatics
    On Sale 15%

    Waste Away Time Release Gels Marine (100 Gallon) - Dr Tims Aquatics

    Dr Tim's Aquatics

    $21.69
    $18.44
    The gels are full of our Waste-Away Bacteria that are automatically and continuously released into your aquarium to consume nutrients and break down fish waste; keeping your tank clean and water clear. REEF SAFE. “Gets into the nooks and crannies...
  • On Sale 15%
    MicroBacter START XLM 15x (500 ML - 16 oz) - Brightwell
    On Sale 15%

    MicroBacter START XLM 15x (500 ML - 16 oz) - Brightwell

    Brightwell Aquatics

    $40.03
    $34.03
    Professional 15x strength live tank starter nitrifying bioculture for rapidly cycling new marine fish and reef aquaria and brackish aquariums, and for recovering from overcrowding or disasters where the bacteria bed has been damaged or...
  • Nitrate Pro Test Refill - Red Sea

    Nitrate Pro Test Refill - Red Sea

    Red Sea

    $30.99
    Reagent refill for Red Sea Nitrate 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.  
  • On Sale 15%
    PhosGuard Phosphate Remover (250 mL) - Seachem
    On Sale 15%

    PhosGuard Phosphate Remover (250 mL) - Seachem

    Seachem

    $7.15
    $6.08
    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...
  • On Sale 15%
    Refractometer Calibration Standard (60 ml) - Brightwell
    On Sale 15%

    Refractometer Calibration Standard (60 ml) - Brightwell

    Brightwell Aquatics

    $5.04
    $4.28
    Refractometer & Hydrometer Calibration Standard 1.0264 Specific Gravity 1.3394 Refractive Index 35 ppt Salinity 53 uS/cm at 25 deg c Overview Brightwell Aquatics Aquarium Reagents Refractometer & Hydrometer Calibration Standard is...
  • On Sale 15%
    Stability (250 ML) - Seachem
    On Sale 15%

    Stability (250 ML) - Seachem

    Seachem

    $8.82
    $7.50
    Stability® will rapidly and safely establish the aquarium biofilter in freshwater and marine systems, thereby preventing the #1 cause of fish death: "new tank syndrome". Stability® is formulated specifically for the aquarium and contains a...
  • Marine Test Kit Nitrite & Nitrate - Red Sea

    Marine Test Kit Nitrite & Nitrate - Red Sea

    Red Sea

    $26.99
    It’s all in the balance This combined test kit provides either 100 nitrite or 50 Nitrate and 50 Nitrite advanced colorimetric tests for marine aquariums. This kit is essential during the maturation of all marine and reef...
  • On Sale 15%
    Liquid Phosban-L (500 ml) - Two Little Fishies
    On Sale 15%

    Liquid Phosban-L (500 ml) - Two Little Fishies

    Two Little Fishies

    $23.99
    $20.39
    Got a little phosphate problem? You can solve that in a hurry with PhosBan GFO granular ferric oxyhydroxide. But if your phosphate problem is more than 0.5 ppm you can use our new little solution, PhosBan-L, a highly concentrated liquid containing...
  • On Sale 15%
    Pinpoint Wireless Thermometer - American Marine
    On Sale 15%

    Pinpoint Wireless Thermometer - American Marine

    American Marine

    $24.99
    $21.24
    PINPOINT® Wireless Thermometer will measure the temperature at the waterproof probe tip on the remote sensor(s), utilizing a radio wave signal, and will display the temperature in Fº or Cº degrees. PINPOINT® Wireless...
  • KH Coralline Gro - (500 ml) - Red Sea

    KH Coralline Gro - (500 ml) - Red Sea

    Red Sea

    $19.99
    Marine buffer supplement with trace elements that promote the development of Coralline Algae KH Coralline algae will grow naturally, without any special supplements in all reef systems optimized for hard corals. KH Coralline Gro is a complex of...
  • Magnetic Mini-Stirrer - 115V (HI190M-1) - Hanna Instruments

    Magnetic Mini-Stirrer - 115V (HI190M-1) - Hanna Instruments

    Hanna Instruments

    $74.00
    The HI190M is a compact and lightweight magnetic stirrer. With a small footprint, lack of laboratory bench space is no longer a concern. Built to last with a protective covering and a user-adjustable stirring speed, this small stirrer is great for...
  • On Sale 15%
    Marine Buffer (1 KG) - Seachem
    On Sale 15%

    Marine Buffer (1 KG) - Seachem

    Seachem

    $23.16
    $19.69
    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...
  • Magnesium Reefer (MG) Test Kit 50 Tests - NYOS Aquatics

    Magnesium Reefer (MG) Test Kit 50 Tests - NYOS Aquatics

    NYOS

    $19.99
    MAGNESIUM 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...
  • HI701 Free Chlorine Checker - Hanna Instruments

    HI701 Free Chlorine Checker - Hanna Instruments

    Hanna Instruments

    $63.95
    The Hanna Free Chlorine 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...
  • On Sale 15%
    Purple Up (8 oz) - Caribsea
    On Sale 15%

    Purple Up (8 oz) - Caribsea

    Caribsea

    $11.75
    $9.99
    PurpleUp™ - uses a unique dual method approach to coralline algae acceleration. This approach is so unique that PurpleUp has been awarded a US patent (US patent No. 7,565,883). It contains ionic calcium; which immediately raises dissolved calcium...
  • On Sale 15%
    (13 Elements) Sample ICP Mass Spec Saltwater Aquarium Water Test - ICP Analysis
    On Sale 15%

    (13 Elements) Sample ICP Mass Spec Saltwater Aquarium Water Test - ICP Analysis

    ICP Analysis

    $14.95
    $12.71
    This is a 13 element sample test so you can check it out.  The full version has 50+ elements. The full version test is the first Mass Spec test offered to the aquarium industry.  It will test over 50 elements down to ppt, parts per trillion...
  • On Sale 15%
    AccuraSea Refractometer Calibration Solution (250 ml) - Two Little Fishies
    On Sale 15%

    AccuraSea Refractometer Calibration Solution (250 ml) - Two Little Fishies

    Two Little Fishies

    $11.99
    $10.19
    Do 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...
  • On Sale 15%
    NeoNitro (250 mL) - Brightwell
    On Sale 15%

    NeoNitro (250 mL) - Brightwell

    Brightwell Aquatics

    $6.49
    $5.52
    Balanced Nitrogen Source for Nitrogen-Limited, Low-Nutrient Reef Aquaria Overview Used in conjunction with MICROBACTER7 and REEF BIOFUEL or KATALYST, enablesnatural phosphorus uptake to take place in systems with inadequate nitrogen content,lowering...
  • On Sale 25%
    (OVERSTOCK) (Expires 11/2025) (HI781-25) Marine Low Range Nitrate Checker Reagents (25 Tests) - Hanna Instruments
    On Sale 25%

    (OVERSTOCK) (Expires 11/2025) (HI781-25) Marine Low Range Nitrate Checker Reagents (25 Tests) - Hanna Instruments

    Hanna Instruments

    $16.00
    $11.99
    The 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...
  • On Sale 15%
    Iodine Concentrate (250 ml) - Two Little Fishies
    On Sale 15%

    Iodine Concentrate (250 ml) - Two Little Fishies

    Two Little Fishies

    $9.99
    $8.49
    Two Little Fishies Iodide and iodine supplement is made from potassium iodide and seaweed extracts. Use this supplement to provide an extra boost of this important element and observe the positive effects. Great for growing Xenia, other soft corals and...
  • Phosphate Pro Test Kit (PO4) - 100 Tests - Red Sea

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

    Red Sea

    $54.99
    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...
  • On Sale 15%
    Pristine (500 ml) Bacterial Water Conditioner - Seachem
    On Sale 15%

    Pristine (500 ml) Bacterial Water Conditioner - Seachem

    Seachem

    $19.23
    $16.35
    Pristine™ uses bio-augmentation, a non-chemical and natural method, to improve water quality. It provides bacteria that break down excess food, waste and detritus in freshwater and marine systems. It will also reduce excess nutrients (e.g. ammonia,...
  • On Sale 15%
    Kalkwasser Dry Powder Mix (500 gm - 1.1 lbs) - Two Little Fishies
    On Sale 15%

    Kalkwasser Dry Powder Mix (500 gm - 1.1 lbs) - Two Little Fishies

    Two Little Fishies

    $15.26
    $12.97
    Calcium Supplement Mix. Our pure source of Calcium Hydroxide makes the ideal solution for replenishing calcium and maintaining alkalinity, for corals, clams, and calcareous algae that build skeletons of calcium carbonate. It also helps maintain pH,...
  • On Sale 15%
    Alkalin-P 8.3 - Dry pH/KH Builder (1000 gm) - Brightwell
    On Sale 15%

    Alkalin-P 8.3 - Dry pH/KH Builder (1000 gm) - Brightwell

    Brightwell Aquatics

    $17.60
    $14.96
    KH Buffer Powder for all Marine Fish and Reef Aquaria Overview Raises alkalinity, adjust pH to 8.3 Unlike single component KH products such as sodium carbonate, Alkalin 8.3P is a multi-component automatic buffer that regulates pH and its use makes...
  • Phosphate Marine Test Kit - Red Sea

    Phosphate Marine Test Kit - Red Sea

    Red Sea

    $28.99
    Phosphate Test Kit Accurate measurement of Phosphate in marine aquariums PO4 Red Sea’s colorimetric Phosphate test kit provides a quick and reliable measurement of Phosphate in your aquarium to an accuracy of 0.1ppm PO4. This test kit, in...