Promote A Healthy Ecosystem Fast Acting Liquid Formula Safe For Fish, Plants & Wildlife Pond Logic® LiquidClear™ is a great jump start for new ponds, after pond cleanouts, and during the warm summer months. The natural bacteria in LiquidClear™ instantly activates as it hits the water. The bacteria multiplies every 20-40 minutes as is digests the dead organics in the pond, making the water crystal clear. For best results, Liquid Clear™ treatments should begin in the spring when the water temperatures hit 50°F or when the fish begin to feed.