Filtration is a critical component in any water garden since it promotes a healthy and ecologicallystable pond environment. TotalPond's Complete Pond Filter with UV Clarifier is a pressurized biological filtration system with an integrated UV clarifier. This natural and complete garden pond stabilizing system cleans pond water while adding essential bacteria needed for a healthy aquatic environment. Ultra Violet technology is used in ponds to eliminate microscopic organisms that end up becoming those dreaded algae blooms. The addition of the UV Clarifier gives an extra step of clean to this filter; the water passes over the ultra violet bulb, cleaning the green out of water. This filter is recommended for ponds up to 1200 gallons and can be placed either in the water or outside of it. This filter system can be used for ponds and waterfalls.