in the last 2 days we have gotten heavy rain.my pond is discharging alot of water,the water is probably 12 inches high and flowing out very good.my question:is this good for a pond to flush it out every once in a while are does it do more harm than good.it will yake about 3 days to get down to normal level again.i'm thinking this might help the oxygen level and flush out bad water.thanks