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| View Poll Results: What size? | |||
| 1" |
   
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3 | 23.08% |
| 1 1/2" |
  
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9 | 69.23% |
| Other |
  
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1 | 7.69% |
| Voters: 13. You may not vote on this poll | |||
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#8
04-21-2009, 05:16 AM
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A single 1" drain is good for ~600gph and a 1.5" for around 1200gph (remembering if planning a Herbie, the second drain is normally dry and only flows in the emergency situation).
If doing a Herbie, me, I'd go 1" return and considering it's a 45g, probably just 2x1" drains if not planning on your return pump contributing significantly to the displays flow. 2x1.5" if you don't mind a bit of flow through your sump. 
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