Pond Boss Forums INTRO Questions & Observations Can talapia be raised above ground swimming pools?

I also plan to add a check valve. Right now if I shut off the pump it will drain the tanks through it. This will be great for flushing the top when I want to drain the sediments out of the bottom. But it will kill all the microbes in my filter if the pump goes out for more than a few hours. The check valve will keep the water from draining out the tanks if that happens and then of course I will have to add a bypass for the check valve if I want to drain the top portion of the filters.