Seachem Reef Additives

Seachem Aquarium Water Conditioners

Owned and operated by fellow fish enthusiasts, Seachem has been providing hobbyists with education and support as well as trusted, scientifically proven saltwater and freshwater aquarium products for more than 40 years.

From 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.

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

For filtration systems

Seachem Matrix is a unique, high-porosity biomedia for wet or wet/dry filters that have proven to be more effective than plastic biomaterials and will not break down or need to be replaced.

Seachem Purigen is 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 by treating it with bleach.

For planted aquariums

Developed for natural freshwater aquariums, Seachem Flourish contains a rich assortment of microelements, trace elements and other nutrients important to 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 Petco’s Seachem solutions to find the best one for your aquarium today.