Freshwater tidy tank is a natural sludge eradicator odor control. Freshwater tidy tank is formulated using natural ingredients including benefical bacteria, and contains no harmful chemicals. This unique water conditioner improves water quality, reduces odors in aquaponic and hydroponics growing environments, and will break down the build-up of organic debris in gravel and filters. The reduction of sludge in filters will in turn extend the useful life of filter materials. Exact dosing is not critical. Just use 20 drops per gallon, and repeat in 24 hours. Tidy tank may be used every 2 weeks, whenever noticeable organic debris or sludge is present. Suitable for freshwater. Safe for aquaponics and hydroponics. Helps control algae by reducing algae's food source.