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Old 09-18-2006   #2 (permalink)
Russell Peters
Honmei
 
Join Date: Sep 2005
Location: Martinez,CA
Posts: 4,564
If you are going to put a submersible pump in the filter boxes like you are suggesting, then you would need to use a minimum of 4" pipe starting at the bottom drain. You should have no problem with suction then.

Russ
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