supply diffuser r+d...

Today I fabricated the first of a set of test diffusers for the supply side of the tank. The first diffuser I put in worked great and immediately established laminar flow across the tank. I'm going to quickly move to getting the correct pump and plumbing on the tank for my target flowrate before settling on the final design. I'll also wait for the plants to grow some more to fill the tank up and obstruct the flow. Waiting should provide the best test conditions.