Laguna Bio Sludge Control is specifically formulated to break down organic solids and pond sludge. The water treatment activates immediately when added to the pond water.
A completely organic sludge remover, Bio Sludge Control is safe for fish and plants and will help improve overall pond water conditions. Size: 2 L (67 fl oz), treats 40,000 L (10,566 U.S. gal.) of pond water.
Other size available :

Laguna Bio Sludge Control, 473 mL (16 fl oz) (PT886)