NATURAL, HEALTHIER AQUARIUM - Our gravel cleaner introduces healthy, natural bacteria that biologically eliminate excess fish waste, fish food, toxins, odors, and other organic wastes. This leads to cleaner, clearer water, and a healthier fish tank. | EXTEND YOUR TANK MAINTENANCE - Our professional grade, non-chemical formula will extend the time between water changes and vacuum gravel cleanings by eliminating organic waste that accumulates in your aquarium. It also helps correct for overfeeding. | MAKE YOUR AQUARIUM WATER FISH SAFE - Our gravel cleaner not only improves water quality and clarity and minimizes odors, but also naturally reduces the build-up of toxic ammonia and nitrite as well as problem-causing nitrate and phosphate. | PROFESSIONAL, EASY, ONE-STEP APPLICATION - Simply add one capful per 10 gallons to your Saltwater or Freshwater aquariums for cleaning. That's it, done! No messy accessories, tools or pump. Our 16 oz bottle treats up to 960 gallons, now that's value. | OUR PROMISE - All supplies made in the USA. We have a customer promise of "complete product delight". We are a family-owned business passionate about making natural products with high standards keeping your beautiful fish safer and healthier.