Advice for use: To help maintain a healthy aquarium, change filter cartridge every 3-4 weeks, or if water flow becomes obstructed. Remove cartridge when medicating water as carbon will absorb medications. Change out 10% of water weekly or 25% monthly. Use a water conditioner (sold separately), every time you add fresh tap water to your aquarium.

Caution: Product will get warm. Avoid contact with flammable material. Never use soap or detergent on any items placed in your aquarium as they are highly toxic to fish. This is not a toy. Keep out of reach of children.