EZBIO20 Size: 20 Double - Up to 3400 GPH Features: -Provide space for beneficial bacteria to colonize helping to improve overall water clarity. -Max Pump Flow: 1,980 GPH (11). -Max Pump Flow: 3,405 GP..
HALFGRN Sheet: Medium Density Green Features: -Works great both as a mechanical and a biological media. -Mechanical media -- collects debris more efficiently and prevents clogging; solid fibers resist..