Ok, Tony. Gotcha. My understanding is that you never want to restrict the input of a powerhead, but that you can restrict the output. As such, I guess a ball valve on the output INSIDE the Fluval would be the only way I can imagine? I don't know! Interesting question.
Quote:
Originally Posted by Delphinus
Doesn't the Fluval itself have a powerhead? So a valve on the input or output might work? That's mostly why I was asking the question though, just curious how the flow was handled, if it was the built-in powerhead or whether that just sits idle and an external powerhead is used.
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