Best Selling Products

Made in the USA - Canada’s Best-Selling Color Changing DI Resin.  Fills One 10" DI CartridgeShips in mylar bag Experience unmatched confidence wit...

  What is the difference between regular and HC German GFO? The main difference is that HC is roughly 1.5 times more effective at removing P...

Carbon block cartridge 10" - 0.5uM Coconut shell activated carbon NSF certified Fits all industry 10" RO and RODI un...

10″ 0.5uM Sediment Filter Graduated sediment removal Excellent for use in areas with extremely high sediment levels Near absolute micron rating...

Carbon block cartridge 10" - 1uM Coconut shell activated carbon NSF certified Fits all industry 10" RO and RODI units

REFILL KIT FOR HI772   Get accurate results for your saltwater aquarium with our simple handheld colorimeter.   Our alkalinity c...

SOLD BY THE POUND pH balanced Comes in pelleted format Minimal phosphate levels Huge surface area It is not acid-washed, so it does not l...

Hanna Instrument Phosphorus Ultra Low Range Reagents - HI736 (25 units)

Refill Kit for Hanna Instruments PO4 Checker - pack of 25

Refill Kit for Hanna Instruments Checker Marine Alkalinity Colorimeter

Specially formulated for the use with reverse osmosis water Red Sea is please to announce the addition of an innovative new salt formula designed t...

Contains 3x 2-month reagent kits  (based on the default testing schedule of 4-Alk/2-Ca/2-Mg per day).  The 2month reagent kit has at least 240 alka...

DOW FILMTEC™ Next Generation Home RO Elements Dow's next generation elements have been precisely designed and will replace existing DOW FIL...

Enriched formulation. Optimum effectiveness. Formulated specially for use in reef aquariums, Reef Crystals® contains essential ocean reef elements ...

Red Sea NO3:PO4-X Contains a unique complex of carbons that are used by nutrient-reducing bacteria. Each carbon is utilized by different strains of...

Marco Rock - Premium Dry Key Largo (20 lbs Each box is hand packed by a reef tank enthusiast to ensure you will get what you need and want for your...

IC-GEL™ is a cyanoacrylate paste that is extremely thick which comes in an applicator tube like toothpaste. It has the same bonding and curing t...

Overview: Complex system of non-pathogenic aerobic and anaerobic microbes, as well as natural enzymes, specifically formulated to establish biolog...

Salifert Calcium Test Kit Our calcium test is capable in resolving the calcium content in 10 mg/L steps. The color change is sharp and facilitates ...

Instant Ocean® Sea Salt is the most carefully formulated and universally preferred sea salt in the world. The #1 choice of hobbyists, public aquari...

REEF ENERGY PLUS  All-In-One Coral Superfood An all-in-one superfood that will have your corals thanking you, delivering better growth, higher resi...