Every living thing, including bacteria will only survive with a source of air.
Unfortunately, many pond keepers don't realize this, and therefore, they are unaware of the extreme importance of air from air diffusers in both the pond, and the biological side of the filtration system.
Upon adding Air diffusers, the benefits of air within the filtration system will be seen immediately.
|HK-FMDL||Large Flex Membrane Diffuser 12-in.||$ 76.91||C a l l|
|MDB11||Single Base Membrane Diffuser (1.0-3.0 CFM)||$ 86.39||C a l l|
|MDB22||Double Base w/ 2-9-in Diffusers (2.0-6.0 CFM)||$ 165.99||C a l l|
|HK-FMD||Flex Membrane Diffuser 9-in (1.0-3.0 CFM)||$ 43.99||C a l l|
|10-4315||1-1/2-In. Venturi Tee Aerator||$ 15.65||C a l l|