I promise to read that...Unfortunately, I have to get ready for work here shortly. Perhaps if I explained the set up a bit better. The intake is a a turf scrubber and the outflow is a simple elbow with a cone filter attachment. Our set up has 5 tanks strung together(the thread on tank builds called Lucy's), so it wouldn't be a problem to have the intake for the powerheads be in another tank and take a line over for the flow in the planted tank. My problem/question would be that if I don't have the flow from the powerheads the macro algae will suffer,but I certainly wouldn't want to harm or put the upside down jellies in an environment they would find intolerable. I pretty much have to have the macro tank, but making it habitable to upside downers would be a major plus.