Removes dissolved organics from the surface and increases gas exchange
Can be used with canister filters, power filters and in-hood filtration
Prevents undesirable biological processes that take place on the surfa...
It skims off the protein layer which forms on the water surface, improving oxygen exchange. For filters 2215, 2217, 2226, 2228, 2250, 2260, 2315, 2317, 2326 and 2328, a T-reducing piece is necessary, so that a bypass is created a...