Quick and thorough removal of sludge and dirt layers in aquarium gravel. The Eheim Sludge Extractor removes detritus without taking out water. Powerful and maintenance-free suction pump loosens gravel layer so the sludge is churned up and drawn into the suction system. Useful bacteria remain undisturbed in the lower part of the gravel bed. Uses 4 AA batteries (included). For best results, operate the Eheim Sludge Extractor at a maximum aquarium water depth of 23-1/2 inches and a minimum depth of 8 inches. For use in fresh or saltwater aquariums. The Eheim Sludge Extractor Measures 2-1/2″ x 24″ high.

If you’re interested in this product, why not take a quick look at the Fluval AquaVac+. This alternative product includes a unique syphoning system making water changes even more simple, together with replaceable filter pads to trap even finer particles than the Eheim Sludge Extractor (and it’s also cheaper!). To view, click here