bio filter

Hi Folks, my concerns on filtering my ponds inspired me to convert a Hayward canister swimming pool filter into a pond filter. the photos: Filter pictures by mbikes - Photobucket I started with lava rock in the bottom to cover the drain/outlet: Then I added 10 gallons of Bio Balls Here the...

Hi Folks, my concerns on filtering my ponds inspired me to convert a Howard canister swimming pool filter into a pond filter. the photos: Filter pictures by mbikes - Photobucket I started with lava rock in the bottom to cover the drain/outlet: Then I added 10 gallons of Bio Balls Here the...