bilge water grey black water tank treatmentBilge Water, Grey & Black Water Tank Treatment (product 243) is a non acidic, lemon fresh, biologically based product specially developed for vessels. It removes unpleasant odours in waste water tanks. Due to the biological enzymatic action it does not mask the odours but penetrates to the source of the pollution. It breaks down pollution naturally and leaves a fresh smell. This product is suitable for use on all difficult to clean surfaces and places