In a small pond of 1200sqft X ave 4 ft deep (35000g) I'm not sure you want fish reproducing in that pond. Management of the numbers would be time consuming compared to non-spawning fish. Weigh your options.

Consider draining it dry, dry no puddles, for the fall-winter season. Maybe apply a layer of hydrated lime to the sediments pre-ground freeze. These two methods should kill leeches and allow pond to break down and decompose a lot of the accumulated organic materials which is a common practice in fish farm ponds. Refill in spring for a good leech free swimming season.

Last edited by Bill Cody; 08/17/13 02:37 PM.

aka Pond Doctor & Dr. Perca Read Pond Boss Magazine -
America's Journal of Pond Management