Check the listing for details. Professional strength Sludge Remover 2 pound Aqua Meds. Condition: New. Listed at 55.00 USD. ​​​​​​​ Welcome to EcoquaticBest PricingPremium QualityFast Shipping Sludge Remover 2 pound Aqua Meds Professional strength, concentrated beneficial bacteria. Especially formulated for rock and gravel bottom ponds! Accelerates the removal of organic bottom solids that are slow to degrade. As organic solids accumulate on the pond bottom, they begin to breakdown releasing toxic gasses. These gaseous by-products are a danger to fish and other pond inhabitants. Aqua Meds Sludge Remover helps remove toxic fish waste, left over food and deadly gases that build up under the rocks and in the gravel of your koi pond. A big cause of pond water and fish health problems100% NATURAL Pond BacteriaAlso works very well in ponds without gravel bottomsRemoves algae causing phosphorusReduces pond water odors and yellowing, improves water quality and claritySafe for pets, filters, plants and wildlife