Cascade Bio-Sponge for Internal Filters, Cascade 300 (1 Pack) Lighting Fluorescent these pre-cut activated carbon pads

these pre-cut activated carbon pads drop directly into the Bio-Media Grid for a fast

stain and odor resistant plastic

and if a pet is on a special diet

Do not use it on open skin wounds

Cascade Bio-Sponge for Internal Filters, Cascade 300 (1 Pack) Lighting Fluorescent these pre-cut activated carbon padsThe Replacement Bio Sponge for the Penn Plax Cascade Internal Filter optimizes colonization of beneficial aerobic bacteria and removes ammonia and nitrites. Quick and easy to replace Convenient, no fuss replacement sponge Replace monthly for optimum water quality Specifications: Fits Penn Plax Cascade 300 Internal Filter Oops, this item is out of stock! But dont worryour Special Deals section is packed with amazing finds at even better prices. Explore