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  #1  
Old 11/01/2007, 11:11 AM
gotbags-10 gotbags-10 is offline
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Join Date: Jan 2007
Location: Indy
Posts: 93
diamater size for return line?

what size pvc should i use if im using a mag 5 for my return pump from my sump. I'm going to have a 1 inch drain from my 24g and was thinking 1/2 inch for the return. would this be correct?
  #2  
Old 11/01/2007, 11:16 AM
rustybucket145 rustybucket145 is offline
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Location: valdosta, ga
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I'd probably go with 3/4" but 1/2" would probably be ok....
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  #3  
Old 11/01/2007, 02:20 PM
kgross kgross is offline
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Join Date: Nov 1999
Location: Nampa, ID
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How long will your return line be and how much flow do you want through it?

If you want max flow use 1 1/4 pipe.

Just to give you some numbers say you have 4 feet vertical pipe 1 foot horizontal and 4 90 degree elbows. Using the flow calculator here on rc
It does not go down to 1/2 inch pipe, but with 3/4 you get 266 gph
1 inch gives you 291 gph
1 1/4 moves you up to 302 gph
So how much flow do you want?
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