The return size depends on the pump, you should find a reccommended size for your particular pump in the user manual. Many manufacturers recommend a pipe size twice the diameter of the in/outputs on the pump. For drains I would use 1". Are you doing Herbie drains?
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~ Mindy
SPS fanatic.
Last edited by Myka; 04-21-2009 at 04:27 AM.
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