Flex Pond Kit - 220 Gallon, 300 GPH Pump, Model# 79991 300 GPH pump 220 gallons of water and is the largest pond in the line in gallons Non-toxic and impervious to the changing weather conditions. Kidney shape design is beautiful and pleasing to the eye Huge shelf area provides plenty of room for variety of water plants and space for underwater lighting plus a large deep area for fish.