Our 18″ x 25″ Foam set comes with 3 sheets to offer optimal filteration, by catching debris but also they provide essential breeding grounds for beneficial bacteria.
Blue is the finest Grade, White is a medium coarse and Black is the Coarsest.
Your water should be filtered through the Black sheet first to remove the larger debris, then the white sheet and finally the blue sheet for the smaller particles.
Manufactured especially for the aquatic trade for over 40 years, our foams are completely safe for aquatic applications.
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