I would just leave the returns constant and invest in a Vortech, Controllable Koralias, couple tunzes on a controller, or some Maxi-Jets on a JBJ Duo or Wave Bar.
I run 2 modded Maxi-Jets with sureflow kits on a wave bar and they chatter a little on start up but I dont mind as its in my living room. When I upgrade I am going to want something quieter so I will be looking at a Vortech or Tunze package.
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Ryan
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