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On Sale 15%
PhosGuard Phosphate Remover (2 L) - Seachem
Seachem$35.61$30.27PhosGuard 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%
Prime (50 mL) - Seachem
Seachem$3.52$2.99Prime® is the complete and concentrated conditioner for both fresh and saltwater. Prime® removes chlorine, chloramine and detoxifies ammonia. Prime® converts ammonia into a safe, non-toxic form that is readily removed by the tank’s... -
On Sale 12%
Trace Colors D (500 ml) BioActive Elements - Red Sea
Red Sea$19.99$17.59Coral Color D: A complex of 18 trace elements. These 18 elements (out of all the trace elements in NSW) participate in the metabolic processes inside a coral’s skeleton and soft tissue. D elements are related to the blue/purple chromo-proteins. -
On Sale 20%
Hanna Master Reef Test Kit (772 dkh, 758 Calcium, 713 Phosphate, 781 Nitrate) Checker HC (Saltwater) - Hanna Instruments
Hanna Instruments$271.96$217.57772 Checker The 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... -
On Sale 15%
7.00 pH Calibration Fluid (5 Pack) - Neptune Systems
Neptune Systems$9.99$8.49Neptune 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... -
On Sale 15%
10.00 pH Calibration Fluid (5 Pack) - Neptune Systems
Neptune Systems$9.99$8.49Neptune 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... -
On Sale 15%
B-Ionic Magnesium (1 Gallon) - ESV
ESV$41.99$35.69Through the chemical process known as "ion-pairing" magnesium ion concentration influences the saturation point for calcium carbonate in solution. In general the further the magnesium concentration drops from natural seawater levels (1350 ppm) the more... -
On Sale 15%
44 lbs ReBorn (Original Size) Calcium Reactor Media (44 lbs) - Two Little Fishies
Two Little Fishies$169.99$144.49Reborn is back to it's original size & formulation. Large size pieces. Reborn® coarse aragonite media for calcium reactors is composed of fossil skeletons of reef building corals sustainably harvested from pristine sites in the Western... -
On Sale 12%
Trace Colors B - Potassium (500 ml) - Red Sea
Red Sea$19.99$17.59Coral Color B: A complex of Potassium and Boron. Potassium plays an essential role in the transportation of coral nutrients within the soft tissue (including the nutrients provided by the Zooxanthellae). Potassium and Boron significantly affect the... -
On Sale 15%
PINPOINT ORP Monitor - American Marine
American Marine$114.99$97.74PINPOINT® ORP Monitor will measure the ORP (oxidation-reduction potential, or REDOX) of your system. It is popular with those who use ozone gas or potassium permanganate as an artificial oxidation agent in fresh or saltwater. It is also popular for... -
On Sale 20%
Electrode Cleaning Solution (500 ml) HI7061L - Hanna Instruments
Hanna Instruments$18.99$15.19HI7061L 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... -
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... -
On Sale 15%
Phosphate Rx (1 oz) - Blue Life USA
Blue Life USA$38.40$32.64Phosphate Rx is an amazingly simple and effective product that has revolutionized the way phosphates are removed from saltwater and freshwater aquariums. When added, the formula rapidly binds to phosphate molecules making them inactive and easily... -
On Sale 12%
Reef Foundation B - Alkalinity (KH) - (5 Liter / 1.32 Gal) - Red Sea
Red Sea$109.00$95.92KH/Alkalinity Supplement Carbonate & buffer complex 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... -
On Sale 15%
B-Ionic Calcium Buffer System (64 oz) - ESV
ESV$29.99$25.49Bionic Calcium Buffer is the original, unique, easy to use, two-component liquid supplement system. When using equal volumes of each component, the aquarist can easily maintain calcium and alkalinity levels with no mixing powders, disruption of ionic... -
On Sale 15%
Salifert Master Reef Testing Combo Kit - Salifert
Salifert$99.99$84.99Six Salifert Professional Test Kits Includes Calcium, Nitrate, Phosphate, pH, Alkalinity & Magnesium Includes all the Core parameters of any Saltwater Aquarium/Marine Reef Tank Salifert Nitrate Test Kit - 50 Tests, Salifert Calcium Test... -
On Sale 12%
Phosphate Pro Test Refill (PO4) - 100 Tests - Red Sea
Red Sea$30.99$27.27Reagent refill for Red Sea Phosphate 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%
NeoNitro (500 mL) - Brightwell
Brightwell Aquatics$10.69$9.09Balanced 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 15%
Spot Check Marine Water Test (Single Test) - SaltwaterAquarium.com
SaltwaterAquarium$24.99$21.24Spot Check - Get marine water testing for the 8 core elements of a saltwater fish tank from the comfort of home. Use this mail in water test to spot check your marine aquarium and/or verify what your seeing on your home test kits. It is time to... -
On Sale 15%
AcroPower Amino Acids for SPS Corals (1000 ml) - Two Little Fishies
Two Little Fishies$35.40$30.09AcroPower supplies amino acids that corals need to build their skeletal architecture. Like other cnidaria, corals have a special ability to uptake dissolved amino acids across their entire surface. Closed system aquariums with protein skimming and other... -
On Sale 15%
Digital Seawater Refractometer MA887 w/Protective Case - Milwaukee
Milwaukee Instruments$136.00$115.60This refractometer does come with a black or blue protective case. The new Milwaukee MA887 Seawater Digital Refractometer encompasses 3 different types of user selected scales for the measurement of seawater providing for a much more precise evaluation... -
On Sale 12%
KH/Alkalinity Pro Test Refill - Red Sea
Red Sea$24.99$21.99Reagent alkalinity pro refill test kit is an advanced titration test Measuring the level of buffers in reef aquarium to an exceptionally high accuracy of 0.05 meq/l (0.14 dkh) This test refill replenishes KH/alkalinity pro test kit with sufficient... -
On Sale 15%
PURE Reef Salt Mix (20kg Bucket) - NYOS
NYOS$89.99$76.49PURE, Trustworthy, & Consistent Ultra-pure, pharmaceutical grade ingredients No yellow tinge Quick solubility Consistent quality Near-natural mineral levels Improves color, growth, and polyp expansion of corals ICP controlled and... -
On Sale 15%
Chaeto Gro Chaetomorpha - (500 ml) - Brightwell
Brightwell Aquatics$18.54$15.76ChaetoGrō Complete phosphate and nitrate free multi-nutrient with iron, cobalt and molybdenum for chaetomorpha growth and vigor in all marine systems Overview For all marine aquariums & ULNS systems Shrimp & Invertebrate safe Phosphate... -
On Sale 20%
HI780 Saltwater pH Checker - Hanna Instruments
Hanna Instruments$67.99$54.39Get accurate water testing results with the HI780 Marine pH Colorimeter. With a digital read out, there is no more struggling to determine colors visually. This pH tester's compact design fits in your pocket or stores easily in your shop. Easier to... -
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... -
On Sale 20%
Multi-Reference Calibration Solution (100 ml) Works with Trident - Fauna Marin
Fauna Marin$19.99$15.99With the Fauna Marin Multi-Reference Solution, you can test your test kits under accurate conditions. Our Reference Solution is the first to be based on a saltwater matrix and is quality tested using our ICP-AES testing machine. We use a saltwater matrix... -
On Sale 15%
Restor Liquid Coral Tissue Nutritional Supplement (500 ML) - Brightwell
Brightwell Aquatics$18.54$15.76Overview 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%
Potassium Concentrate (500 ML - 16 oz) - Two Little Fishies
Two Little Fishies$15.99$13.59Julian Sprung's Reef Formula Potassium occurs at a concentration of about 400 mg/L in full-strength natural seawater. It is an essential element for metabolic function of all living cells. Sometimes artificial seawater mixes are deficient in potassium,... -
On Sale 12%
Reef Mature Starter Kit (Aquarium Cycling Solution 65 Gallon) - Red Sea
Red Sea$38.99$34.31Red Sea’s Reef Mature Starter Kit provides a complete program for the biological maturation of your reef aquarium, establishing full nitrification plus nitrate and phosphate reduction in a few weeks. Most biological ‘cycling’ products... -
On Sale 20%
HI764 Nitrite Ultra Low Range Checker HC (Saltwater) - Hanna Instruments
Hanna Instruments$67.99$54.39Nitrification is the biological oxidation of ammonia (ammonium ion) into nitrite followed by the oxidation of the nitrites to nitrates. The first step of this 2-step process is carried out in an aquarium by nitrifying bacteria. During this quick process,... -
Saltwater Master Test Kit (High Range pH, Ammonia, Nitrite, Nitrate) - API
API$35.98Saltwater Master Test Kit - A complete kit for testing marine aquarium water. Tests water four ways to protect marine fish and invertebrates from dangerous water conditions. Kit includes tests for: High Range pH, Ammonia, Nitrite, Nitrate, plus four test... -
On Sale 15%
(Pack of 3) Lee's Thinwall Rigid (Hard) Airline Tubing (3/16 x 3' long) - Lee's
Lee's$12.99$11.04Clear rigid pvc tubing with thin walls. Use as replacement uplift tubes or to fabricate custom set-ups for aquariums and pools. Pack of 3 Measurements are outside-diameter Lees rigid tubing is 3/16-inch round x 3 feet long. Clear rigid... -
On Sale 15%
PURE Reef Salt Mix (20kg Bag) - NYOS
NYOS$79.99$67.99PURE, Trustworthy, & Consistent Ultra-pure, pharmaceutical grade ingredients No yellow tinge Quick solubility Consistent quality Near-natural mineral levels Improves color, growth, and polyp expansion of corals ICP controlled and... -
On Sale 15%
Potassium Reef Test - Salifert
Salifert$18.81$15.99Salifert test kits have been trusted by discerning reefers for years for their ease of use and reliability. Many reefers will report loss of coloration in corals when potassium level start to drop below 360 ppm. Potassium levels in natural... -
On Sale 15%
NeoPhos - Balanced Phosphorus Supplement (500 ml) - Brightwell
Brightwell Aquatics$10.69$9.09Balanced Phosphorus Source for Phosphorus-Limited, Low-Nutrient Reef Aquaria Used in conjunction with MICROBACTER7 and REEF BIOFUEL or KATALYST, enables natural nitrogen uptake to take place in systems with inadequate phosphorus... -
On Sale 15%
TURBOSTART 900 Saltwater (16 oz) Live Nitrifying Bacteria - Fritz
Fritz Aquatics$84.99$72.24Live 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... -
On Sale 15%
Nitrite (N02) Test Kit - Salifert
Salifert$14.99$12.74Features:Nitrite is a substance that is toxic to fish and invertebrates.It is a misconception that once a tank is through its cycle (first 3 or 4 weeks) that nitrite has vanished.Many nitrite test kits suffer from interference by amines (such as... -
On Sale 12%
Red Sea Salt Mix Blue BOX - (Makes 160 Gallons) - Red Sea
Red Sea$79.99$70.39Red Sea Salt contains biologically balanced, elevated levels of the foundation elements (Calcium, Magnesium, Carbonates) necessary for sustainable, accelerated coral growth. Red Sea Salt is ideal for reef aquariums, in particular for LPS... -
On Sale 15%
Ammonium Chloride for Fishless Cycling - Dr Tim's (4 oz)
Dr Tim's Aquatics$6.99$5.94This bottle of reagent grade ammonium chloride is for use when fishless cycling. Concentration is 50 mg/L of total ammonia-nitrogen (TAN). Dose 4 drops per gallon of aquarium water. Use with One and Only Nitrifying Bacteria. Simple, easy to...