• Remove toxic organic substances ( Ammonia, chloramines etc. ) odors and colour • Improve clarity and sparkle of water • Five times the filtering power of charcoal • Specially for inside, outside filter, top filter, filter box, canister filter & all filtration system * Please use with Ocean Free “A-Z Super Beneficial Bacteria, Bio-Zyme, Super Zeolite Crystal, Bio-Foam, Ceramic Ring, Filter Wool, Bio-filter pad, Bio-plate or Bio-Ball” for Best results.