Best Selling Products

2-month reagent kit (based on the default testing schedule of 4-Alk/2-Ca/2-Mg per day).  The reagent kit has at least 240 alkalinity tests and 120 ...

Sold by the foot

Introducing the new Nero 5 with improved magnet by Aqua Illumination   Up to 3,000gph   Don’t be fooled by its compact demeanor! The Nero 5 punches...

  NEW LIFE SPECTRUM NATUROX SERIES MARINE FISH FORMULA, sinking pellet food 150-300G  Marine fish are very sensitive to the diet you feed them. Nu...

  Two Little Fishies Julian Sprung's SeaVeggies Green Seaweed (30g)   Super nutritious Natural Green Seaweed sheets. Ideal for marine herbivores su...

Arag-Alive!™ PRE-RINSED LIVE MARINE SUBSTRATE   When setting up an aquarium with CaribSea's live products please do not rinse the substrate! The su...

Aquascape is a two-part epoxy putty that has been specially developed by D-D for use in salt water and freshwater aquariums and other underwater...

Aquarium Filter Floss - 14oz bag

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

Get accurate results for your saltwater aquarium with our simple handheld colorimeter.   Our alkalinity colorimeter bridges th...

Red Sea Coral Color A: A complex of halogens (Iodine, Bromine and Fluorine). The halogens act both as antioxidants and oxidative agents within the ...

Flatworm eXit itself is quite safe to fish and invertebrates. However, the body juice of flatworms can be toxic to some reef inhabitants when pres...

NEW QD wet side ALSO compatiable with older ES model. Vortech MP40QQ Wet Side Assembly. Includes the entire wet side vortech pump assembl...

Have fish that jump? A screen top is an excellent way to prevent your fish from carpet surfing yet still allow light to penetrate in to your aqu...

Red Sea Coral Color C: A complex of 8 “light” metals that includes Iron, Manganese, Cobalt, Copper, Aluminum, Zinc, Chrome and Nickel. These micr...

Filter socks are the most convenient form of mechanical filtration. They remove excess food, detritus, organic waste, dust, and other particul...

3/4" x 3" Ball-Socket Flare Nozzle (Loc-Line) 

Red Sea Coral Color B: A complex of Potassium and Boron. Potassium plays an essential role in the transportation of coral nutrients within the soft...

Double stitched nylon filter medium bags. For use with any type of granular filter media such as: phosphate, ammonia, nitrate or silica removers or...

Seachem Reef Glue is easy to use and cures quickly. It is thicker than typical 'glu'e and more like a gel, holding frags in place while it cure...

Cynobacteria is usually encouraged with the presence of nitrate and ammonia, which are both fixed forms of nitrogen. Chemi-clean helps clean and re...

2500G Bulk Calcium Chloride (Makes 5 gallons of solution) - extremely pure pharmaceutical grade - phosphates free - nitrates free - disolves easlil...

specially created for fantastic results in reef and marine aquariums. The new proprietary blend of premium, low-dust pelletized carbon and high cap...