LVAC is an all natural formula for the
removal of fish waste, organic pollutants and sludge. It cleans gravel and
substrate, effectively; along with filtration systems, tubes, hoses, plastic
plants and protein skimmers. It is safe and easy and 100% chemical free. It
contains billions of aerobic heterotrophic bacteria. Treats up to 950 gallons.
Add 1 tsp per 20 gallons. If water is excessively dirty, do a 30-40% water
change and add 1 tsp per 20 gallons. It is recommended to do a gravel vacuuming
at least once or twice a year.