Made from industrial grade components, this Growing Solutions GSIS10 10-gallon compost tea system provides chemical-free nutrition to feed your plants and renews the health of your soil. It features a patented design, fine bubble technology, and a convenient portable size. Operating at 120/220 volts, this compost tea system is OMRI listed and engineered for years of safe and consistent operation. Use compost tea catalyst to feed the beneficial microlife produced during the 24-hour compost tea brewing process. Compost tea catalyst sold separately.