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Chemistry

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

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

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

    Brightwell Aquatics

    $40.03
    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.  
  • PhosGuard Phosphate Remover (250 mL) - Seachem

    PhosGuard Phosphate Remover (250 mL) - Seachem

    Seachem

    $7.15
    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...
  • Waste Away Time Release Gels Marine (100 Gallon) - Dr Tims Aquatics

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

    Dr Tim's Aquatics

    $21.69
    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...
  • Stability (250 ML) - Seachem

    Stability (250 ML) - Seachem

    Seachem

    $8.82
    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...
  • Refractometer Calibration Standard (60 ml) - Brightwell

    Refractometer Calibration Standard (60 ml) - Brightwell

    Brightwell Aquatics

    $5.04
    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...
  • 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...
  • Liquid Phosban-L (500 ml) - Two Little Fishies

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

    Two Little Fishies

    $23.99
    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...
  • Pinpoint Wireless Thermometer - American Marine

    Pinpoint Wireless Thermometer - American Marine

    American Marine

    $24.99
    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...
  • pH 4.01 Calibration Buffer 20 ml (Pack of 10) - Hanna Instruments

    pH 4.01 Calibration Buffer 20 ml (Pack of 10) - Hanna Instruments

    Hanna Instruments

    $14.39
    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...
  • 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...
  • Marine Buffer (1 KG) - Seachem

    Marine Buffer (1 KG) - Seachem

    Seachem

    $23.16
    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...
  • MW102 PH & Temperature Meter w/Auto Calc

    MW102 PH & Temperature Meter w/Auto Calc

    Milwaukee Instruments

    $122.00
    Standard portable meters with no frills! Milwaukee’s low cost durable meters for quick and reliable measurements.  Milwaukee’s Standard meters are manufactured to be easy to use, practical and accurate. Ideal for the classroom,...
  • 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...
  • (Germany) Syn-Biotic Sea Salt (200 Gallon) - Tropic Marin

    (Germany) Syn-Biotic Sea Salt (200 Gallon) - Tropic Marin

    Tropic Marin

    $126.53
    Tropic Marin® Syn-Biotic Sea Salt contains probiotic bacteria for fish and shrimp and special prebiotic bacteria food to promote probiotic bacterial growth and to create low-nutrient conditions in the aquarium for LPS and SPS corals. The term...
  • Purple Up (8 oz) - Caribsea

    Purple Up (8 oz) - Caribsea

    Caribsea

    $11.75
    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...
  • 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...
  • TURBOSTART 900 Saltwater (32 oz) Live Nitrifying Bacteria - Fritz

    TURBOSTART 900 Saltwater (32 oz) Live Nitrifying Bacteria - Fritz

    Fritz Aquatics

    $135.99
    Live product. Keep refrigerated. Do not freeze. Refrigerated life is 4 months with a temperature Range of 34 - 50 degrees F. Use before expiration date on bottom of bottle. Shipping: Live Foods Ship on Select Days & Have a 100% Arrive Alive...
  • NeoNitro (250 mL) - Brightwell

    NeoNitro (250 mL) - Brightwell

    Brightwell Aquatics

    $6.49
    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...
  • Reef Foundation C - Magnesium (MG) - (5 Liter / 1.32 Gal) - Red Sea

    Reef Foundation C - Magnesium (MG) - (5 Liter / 1.32 Gal) - Red Sea

    Red Sea

    $109.00
    Magnesium Supplement Magnesium supplement for balanced formation of coral skeleton It’s all in the balance Calcium, Magnesium, Strontium and Carbonate are the basic foundation elements of coral skeletons.All of these elements need to be...
  • Iodine Concentrate (250 ml) - Two Little Fishies

    Iodine Concentrate (250 ml) - Two Little Fishies

    Two Little Fishies

    $9.99
    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...
  • Alkalin-P 8.3 - Dry pH/KH Builder (1000 gm) - Brightwell

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

    Brightwell Aquatics

    $17.60
    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...
  • Pristine (500 ml) Bacterial Water Conditioner - Seachem

    Pristine (500 ml) Bacterial Water Conditioner - Seachem

    Seachem

    $19.23
    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,...
  • Kalkwasser Dry Powder Mix (500 gm - 1.1 lbs) - Two Little Fishies

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

    Two Little Fishies

    $15.26
    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,...
  • Garlic Guard (250 mL) - Seachem

    Garlic Guard (250 mL) - Seachem

    Seachem

    $7.38
    GarlicGuard™ is an appetite/flavor enhancer for freshwater and saltwater fish. GarlicGuard™ will help renew the interest of poor or finicky eaters. GarlicGuard™ contains naturally derived garlic oil. GarlicGuard™ also contains...
  • 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...
  • 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...
  • LITTLE ReBorn Calcium Reactor Media (8.8 lbs) -  Two Little Fishies

    LITTLE ReBorn Calcium Reactor Media (8.8 lbs) - Two Little Fishies

    Two Little Fishies

    $35.66
    Reborn® coarse aragonite media for calcium reactors is composed of fossil skeletons of reef building corals sustainably harvested from pristine sites in the Western Pacific. When dissolved, ReBorn replenishes calcium and carbonate alkalinity,...
  • Graduated Pipette - 100 µL (HI731339P) - Hanna Instruments

    Graduated Pipette - 100 µL (HI731339P) - Hanna Instruments

    Hanna Instruments

    $22.00
    The HI731339P is a volumetric pipette designed to measure and transfer exactly 100 µL of solution to a cuvette. To obtain the highest accuracy and precision from the HI758 marine calcium Checker it is necessary to add exactly 100 µL of...