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MicroBacter START XLM 15x (500 ML - 16 oz) - Brightwell
Brightwell Aquatics$40.03Professional 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
Red Sea$30.99Reagent 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
Seachem$7.15PhosGuard 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... -
pH 4.01 Calibration Buffer 20 ml (Pack of 10) - Hanna Instruments
Hanna Instruments$14.39HI70004P 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... -
Stability (250 ML) - Seachem
Seachem$8.82Stability® 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
Brightwell Aquatics$5.04Refractometer & 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... -
Pinpoint Wireless Thermometer - American Marine
American Marine$24.99PINPOINT® 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... -
Marine Test Kit Nitrite & Nitrate - Red Sea
Red Sea$26.99It’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
Two Little Fishies$23.99Got 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... -
(Germany) Syn-Biotic Sea Salt (200 Gallon) - Tropic Marin
Tropic Marin$126.53Tropic 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... -
MW102 PH & Temperature Meter w/Auto Calc
Milwaukee Instruments$122.00Standard 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,... -
KH Coralline Gro - (500 ml) - Red Sea
Red Sea$19.99Marine 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
Hanna Instruments$74.00The 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... -
Magnesium Reefer (MG) Test Kit 50 Tests - NYOS Aquatics
NYOS$19.99MAGNESIUM 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... -
Reef Foundation C - Magnesium (MG) - (5 Liter / 1.32 Gal) - Red Sea
Red Sea$109.00Magnesium 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... -
HI701 Free Chlorine Checker - Hanna Instruments
Hanna Instruments$63.95The 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... -
Marine Buffer (1 KG) - Seachem
Seachem$23.16Raises 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... -
TURBOSTART 900 Saltwater (32 oz) Live Nitrifying Bacteria - Fritz
Fritz Aquatics$135.99Live 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... -
Purple Up (8 oz) - Caribsea
Caribsea$11.75PurpleUp™ - 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... -
(Germany) Pro Reef Salt - 160 Gallon (Box) - Tropic Marin
Tropic Marin$95.82The pharmaceutical grade sea salt especially for modern reef aquaria. Tropic Marin® PRO-REEF Sea Salt has been designed to meet the special requirements of reef aquariums with optimized concentrations of calcium and magnesium, which promote the... -
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... -
(HI740228) Filter Discs for Select Photometers (25 pcs) - Hanna Instruments
Hanna Instruments$6.00HI740228 is a filter disc; part of accessory kit for preparation of samples to be analyzed with the HI781 Hanna Nitrate Checker photometers. -
NeoNitro (250 mL) - Brightwell
Brightwell Aquatics$6.49Balanced 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... -
(13 Elements) Sample ICP Mass Spec Saltwater Aquarium Water Test - ICP Analysis
ICP Analysis$14.95This 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... -
Iodine Concentrate (250 ml) - Two Little Fishies
Two Little Fishies$9.99Two 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
Red Sea$54.99Red 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 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... -
Pristine (500 ml) Bacterial Water Conditioner - Seachem
Seachem$19.23Pristine™ 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
Two Little Fishies$15.26Calcium 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,... -
Reef BluePrint Isol8:Ca(OH)2 - Kalkwasser (2.5 kg) - Captiv8 Aquaculture
Captiv8 Aquaculture$34.99Calcium Hydroxide | "Kalkwasser" Characteristics Provides calcium. Increases pH. Kalkwasser application is an integral part of an effective pH-management and coral growth regimen in dedicated coral culture systems... -
Alkalin-P 8.3 - Dry pH/KH Builder (1000 gm) - Brightwell
Brightwell Aquatics$17.60KH 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... -
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... -
Garlic Guard (250 mL) - Seachem
Seachem$7.38GarlicGuard™ 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... -
(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 -
Phosphate Marine Test Kit - Red Sea
Red Sea$28.99Phosphate 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... -
LITTLE ReBorn Calcium Reactor Media (8.8 lbs) - Two Little Fishies
Two Little Fishies$35.66Reborn® 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,... -
MW600 Dissolved Oxygen Meter - Milwaukee Instruments
Milwaukee Instruments$208.00Milwaukee MW600 LED Economy Portable Dissolved Oxygen Meter with 2 Point Manual Calibration, 0.0 - 19.0 mg/L, 0.1 mg/L Resolution, +/-1.5 percent Accuracy, 100 Percent Saturation Range The Milwaukee MW600 is a portable dissolved oxygen (DO) meter for... -
Sea Salt (25 kg - 200 Gallons) Box - Aquaforest
Aquaforest$82.39Synthetic marine salt for aquariums with fish and less delicate corals and invertebrates. When setting up new aquariums it is recommended that the first animals are placed no sooner than 10-14 days after filling the aquarium. After dissolving the salt,... -
Alkalin8.3 - Liquid pH Buffer & Alkalinity KH -Builder (2L) - Brightwell
Brightwell Aquatics$25.35Concentrated KH Buffer Supplement for All Marine Fish and Reef Aquaria Overview Alkalin 8.3P is a multi-component automatic buffer that regulates pH, unlike sodium carbonate its use makes for a much more stable aquarium. Eliminates pH and KH... -
Graduated Pipette - 100 µL (HI731339P) - Hanna Instruments
Hanna Instruments$22.00The 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...