Rio Ultra Clean Canister is a high class luxury filter manufactured in Taiwan. Compare to other filter in the market, Rio Ultra Clean Canister filter added outstanding feature with integrated CO2 mixing. It comes with bubble counter that well connect and add CO2 easily. It designed to inject CO2 into the impeller allowing maximum saturation. It is suitable to use in salt and freshwater aquarium. It comes with 3 media trays, 1 piece of white fine filter pad and 1 piece of black coarse filter pad.