GreenClean Pond 02 PLUS Slow Release Oxygen Plus Bacteria
A slow release, granulated oxygen with a dry bacteria component to help keep ponds in balance. Available in 1-lb (Grp311) -- or 2.5-lb (Grp312) size. Helps sustain water clarity and quality while improving dissolved oxygen levels. Non-harmful to fish, aquatic plants and pets. Use 2tbsp/250 gal weekly x 4 weeks; then 2 tbsp/250 gal 2x/month thereafter.