Is there any way of keeping a natrual filter? i want to build a common snapping turtle pond and i dont have enough outlits cause my other pond uses them all. So is there anyway of creating a Natrual filter? I was thinking of making a circle of made of rocks that lies in the middle of the pond and putting bioballs in there so the water just flows threw if alomost natrualy cleaning it. Idk if it would work, any ideas???
