A sludge layer tends to form on the bottom of ponds that have been in use for a few years. This is caused by sedimentation of both garden and undigested fish wastes. Excess waste accumulates on the bottom of the pond in dead corners and in drains. The wastes may cause clogging in pumps and filters. 

Decomposing wastes produces toxic gasses, which cause noxious odors and may be the source of serious problems if the surface of the pond freezes. Bacta-Pur® Sludgebusters contains beneficial micro-organisms that will efficiently biodegrade this kind of waste.

Regular use prevents accumulation of organic solids so that drains, pumps and filters require minimal cleaning.