Originally Posted By: timberframe
But how much airation is enough?


I believe he's wanting to keep Trout in the pond. I've seen numbers tossed around that trout require between 5mg/l and 7mg/l to survive. The only way to be sure if your aerating enough is to have an O2 meter and check the O2 levels along with the temp. Unfortunately, the accurate ones aren't cheap.

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