Seachem Water Conditioners for Freshwater and Saltwater

Seachem Aquarium Water Conditioners

Owned and operated by fellow fish enthusiasts, Seachem has been providing hobbyists with education and support, alongside trusted, scientifically proven saltwater and freshwater aquarium products for more than 40 years. Our collection of Seachem products is designed to enhance the health and vitality of your aquatic environment.

From the renowned Seachem Prime, the brand’s flagship water conditioner, to Seachem Stability, which helps prevent the number one cause of fish death, "new tank syndrome," every product is backed by Seachem’s own staff of experienced chemists and biologists.

The Pets Club carries an extensive line of Seachem products, trusted by aquarists around the world to meet the needs of freshwater and saltwater aquariums, as well as reefs and ponds. Explore our wide selection of buffers, conditioners, filtration media, testing kits, and more, many of which are unique to Seachem:

For Filtration Systems

  • Seachem Matrix: A unique, high-porosity biomedia for wet or wet/dry filters, proven to be more effective than conventional plastic biomaterials and designed to last.
  • Seachem Purigen: A macro-porous synthetic polymer for freshwater and saltwater with the highest organic removal capacity among competing brands. Purigen darkens as it exhausts and can be easily renewed.

For Planted Aquariums

Developed for natural freshwater aquariums, Seachem Flourish contains a rich assortment of microelements, trace elements, and nutrients essential for the health of aquatic plants.

Seachem products don’t just keep your aquarium healthy; they’re also designed to save you money through increased efficiency and concentration. Shop The Pets Club’s Seachem solutions to find the best options for your aquarium today.

Showing 13–24 of 88 results

Seachem Freshwater Cichlid Lake Salt-250G

SEACHEM Freshwater CICHLID LAKE SALT - 250g Transform your aquarium into a vibrant habitat that mirrors the natural environment of Rift Lake African Cichlids with SEACHEM Freshwater Cichlid Lake Salt. This...

Seachem Stressguard

Discover Seachem STRESSGUARD Seachem STRESSGUARD is your ultimate solution for ensuring the well-being of your aquatic friends. This premium slime coat protection product is specially formulated to reduce stress and ammonia...

Seachem Matrix

Discover the Power of SEACHEM MATRIX Elevate your aquarium's ecosystem with SEACHEM MATRIX, a premium high porosity biomedia designed to optimize biofiltration and effectively remove nitrogenous waste. This innovative product ensures...

Seachem Flourish Excel - 250Ml

Unlock the Full Potential of Your Aquatic Plants with Seachem Flourish Excel - 250ml Seachem Flourish Excel is your go-to solution for providing essential organic carbon to your planted aquarium. With...

Seachem AquaVitro Saltwater Coral Cutter - 18cm

Aquavitro surgical stainless steel coral cutters are primarily designed for use in marine aquariums, but can safely be used in freshwater as well. The blades are of surgical quality and are...

Seachem AquaVitro Saltwater Alpha - 350ml

Alpha is a concentrated conditioner for saltwater. It is 50% more active than our Prime and 375% more active than the next closest competitor. Alpha removes chlorine, chloramine and ammonia. KEY...

Seachem Freshwater AquaVitro Activate - 350ml

Activate is a concentrated (6,000 mg/L P) phosphorus source. When used as directed, Activate will enhance and accelerate the growth of aquatic plants without enhancing algae growth. For maximum benefit, use...

Seachem Freshwater AquaVitro Carbonate - 350ml

Carbonate is derived from potassium bicarbonate. It increases both carbonate hardness and potassium. The concentration of carbonate is 2000 meq/L (5600 dKH). In addition, it contains 78,300 mg/L potassium. KEY FEATURES:...

Seachem Coral Plugs, Large - 12 plugs

Introducing Seachem Coral Plugs, Large - 12 plugs, the perfect solution for aquarists looking to enhance the growth and stability of their coral fragments and colonies. These innovative coral plugs are...

Seachem Coral Plugs - 12 plugs

Discover the power of Seachem Coral Plugs - 12 plugs, the ultimate solution for mounting and growing your coral fragments and colonies with confidence. These plugs are chemically engineered to provide...