NT Labs 250ml Sludge Clear Sludge RemoverNT Labs Sludge Clear Sludge Remover 250ml is an effective pond treatment designed to break down organic waste and remove unsightly sludge. Using a powerful blend of enzymes and beneficial bacteria, it helps maintain a cleaner, healthier pond environment. Key Features Removes unsightly pond sludge Digests organic waste and debris Encourages beneficial filter bacteria Helps reduce disease causing organisms Ideal for use after blanket weed treatment