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So I recently purchased and installed a Penn Plax Cascade 700 for my 29gal. The flow is a little strong for my liking unfortunately. I have installed the spray bar to spread out the output flow. I also pointed the spray bar slightly upwards as that seemed to help slightly. There is a ball valve on the output from the canister that I thought I could partially close, but I still can't reach my desired flow without closing it more than halfway. I have concerns about the strain on the motor or seals of the unit by doing this. The question: Does anybody have experience or suggestions on whether it is acceptable to partially close the output valve to reduce flow? Any other ideas to reduce the flow?