Rowaphos Filter Sponge - Compact Square 4'': J

A unique filter sponge impregnated with both ROWA®phos and ROWA®carbon for the ultimate in phosphate, silicate and organic compound removal from all fresh-water and salt-water aquariums. "¢ Controls nuisance algae growth "¢ High phosphate adsorbent "¢ For fresh-water or salt-water "¢ Fast acting and starts working immediately "¢ No influence on pH "¢ No release of adsorbed substances when saturated "¢ Fits directly into your internal or external canister filter "¢ Available for various standard filters "“ or can be cut to fit