Microbe-Lift rock and substrate cleaner speeds the biological breakdown of slow to degrade organic waste matter from tank bottoms that become toxic to turtles. As organic solids accumulate on the tank bottom they begin to break down, releasing toxic gases and by products to the surrounding environment. Provides rapid natural sludge reduction and 80 percent faster than bacterial products alone. Features biologically degrades bottom organic sludge and muck, reducing or eliminating the potential harmful gaseous compounds. Cleans turtle shells and limbs, helps to prevent shell rot, clarify tank water at the same time, degrade fecal matter and improves filtration. Microbe-lift/rock and substrate Cleaner will discolor your tank water for 48-96 hours after application. The length of time to clear the discoloration will depend on your filter system. Also help to clarify dirty tank water. Keep out of the reach of children. Avoid skin or eye contact. If contact occurs, flush area thoroughly with cold water. This product weighs 8-ounce.