Designed for pressurized CO2 systems Essential for prevent water flooding out of the aquarium Durable stainless steel construction This check valve can only be used with a pressurized CO2 cylinder. The air from a regular air pump will not be able to pass through it. A check valve is used within airline tubing...

Water-Resistant Durable Made in USA Show off how much you love the Co-Op and get to know other Co-Op fans with this simple, high-quality sticker. Easy to peel and stick. Looks great on things like water bottles, laptops & phone cases. Even the bumper of your car. Share it on...

Grass-like leaves Carpeting plant Tolerant of hard water Not available to be shipped to Hawaii and Alaska. Sagittaria subulata or dwarf sag is a great plant for aquarists new to planted tanks. It is relatively undemanding and will spread easily to form an eye-catching, grass-like carpet. It tends to stay shorter...

Lovely white mottling on green leaves Easy background plant Loves root tabs or nutrient-rich substrate Not available to be shipped to Hawaii and Alaska. This plant is similar in care requirements to the Amazon sword, but instead of regular green leaves, the 'Marble Queen' features a beautiful, mottled white and green...

50% cotton, 50% polyester Soft, comfortable fit Designed for long-lasting wear Love freshwater aquariums? So do we! Show the other waters who is boss by wearing this shirt to your local club, local event, the grocery store, the fish store, your cousin's birthday party and more! Available in sizes: S,...

Great for bagging fish or plants Made in the USA Large quantity, perfect for stores, breeders, and fish rooms The right rubber bands makes bagging fish and plants much easier. After the rubber bands we used for 15 years were discontinued by the manufacturer, we decided to make our own....

Cheap Still works just fine Quick Rinse and good as new Do you love easy green? So do we. It's our #1 selling product. However sometimes we get leaky seals from shipping damage on the way from the factory to us. We use these in my fish room, the retail...

Green and red leaves with an oblong shape Tall background or floating stem plant Great for medium to high light planted tanks Not available to be shipped to Hawaii and Alaska. Ludwigia Red is a lovely stem plant that can grow both green and red oblong-shaped leaves. In high lighting, the...

Unique tiger stripes or spots Low light and easy to care for 100% clean with no algae, duckweed, or snails Not available to be shipped to Hawaii and Alaska. Cryptocoryne nurii is a rarer crypt species that has the same size and ruffled leaf texture as C. wendtii but has distinctive...

Automatically feeds fish up to 4 times daily Runs on long-lasting, rechargeable battery 1-year warranty Not available to be shipped to Hawaii and Alaska. The Aquarium Co-Op Auto Feeder is perfect for everyday use whether you're at home or away from your fish tanks. Never over or underfeed your fish again...

Developed for Plant Eating Fish Promotes Healthy Growth Spirulina as Main Ingredient For fish who need to eat veggies in their diet, Spirulina flakes from Xtreme are a great option. This food contains Spirulina as the very first ingredient as well as essential vitamins to promote healthy gill, fin, and tissue...

Delicious treat for fish Similar taste and texture as live brine shrimp Source of natural protein Aquarium Co-Op Freeze Dried Brine Shrimp is a great treat for almost any community fish. The brine shrimp are gut-loaded with healthy nutrients and freeze-dried into an easy-to-feed cube. When placed in water, the cubes...

Natural Proteins and Fats Contains No Fish Meal Balanced, Daily Diet in Gel Form Repashy Bottom Scratcher is a great choice for bottom-feeders who would naturally feed on invertebrates. This food is designed to be a daily diet produced with only natural proteins and fats sourced from invertebrates. It contains no fish...

Unique look Easy to care for 100% clean with no algae, duckweed, or snails Not available to be shipped to Hawaii and Alaska. Taxiphyllum barbieri 'Bogor Moss' from South-East Asia is a hardy plant which makes few demands on the water or light. The moss becomes 3-10 cm thick and grows...

Treatment for parasites Effective against planaria Safe for plants and invertebrates Expel-P from Fritz Aquatics is used as a deworming medication and is intended to treat parasites such as Planaria, Nematodes (like Camallanus Red Worms), Roundworms, Nodular Worms and Hookworms. Symptoms in new and sick fish can include worms visibly protruding...

Easy to grow Large and hardy plant Ruffled, wavy leaves Not available to be shipped to Hawaii and Alaska. Aponogeton crispus is an easygoing and robust plant that will catch eyes in any aquarium it is planted in. This plant can get quite large and, as it grows, will produce...