The filtration sponge of the Top Fin Multi-Stage Internal Filter 20 contains activated carbon that effectively absorbs organic matter, chemicals and odors to help keep aquarium water clean. Only at PetSmart.
Features: 2 in 1 filtration sponge
Caution: This is not a toy. Keep out of reach of children. To avoid injury, follow the safety instructions in the enclosed instruction guide.
Advice for Use:
For filtering larger aquariums, use multiple powerheads and on undergravel filter uplift tubes to provide a combined hourly flow rate of 3 – 4 the tank size. When using in a freshwater tank for aeration of water circulation, an hourly flow rate of 2 – 3 times the tank size is sufficient. Saltwater tanks should circulate water a minimum of 3 – 4 times per hour.