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Riverbed Sand is very fine and can be easily secreted when ingested
The rubber center has minty flavor to keep dogs' breath fresh
Perfect for Shrimp & other Small Invertebrates
Nitrate Test Kit
Lastingly combats floating algae
Fluval Canister Bio-Foam Filter Block Value Pack, Models 406/407 Kong Toys Riverbed Sand is very fineDesigned specifically for the Fluval 306 and 307 performance canister filters, Bio Foam captures large particles and debris for effective mechanical filtration. Mechanical & Biological filter media Custom fit to prevent debris bypass Ideal pore size allows efficient water flow and longer media lifespan Enhances the biological filtration process Convenient 6 month supply (2) A189 Blue BIO FOAM MAX, (2) white A226 BIO FOAM & (2) A237 black BIO FOAM+
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