Pump & Overflow Matching

[dankoos]

I am getting the 700gph overflow from glass-holes dot com for my 90 gallon FOWLR. I found a used Sedra KSP-7000 pump for $35. It has a 3/4" outlet and is also rated at 700gph. I know my pump should be lower gph than the overflow, but figure the head distance (4-5 ft) will lower the gph of the pump so I should be good. Comments please???

 

[natclanwy]

With a drilled tank as long as your pump is rated at the same flowrate as your overflow or less you will be okay. I couldn't find a flow chart on your pump so I couldn't calculate the flowrate with 5' of head.

 

[beaslbob]

Originally Posted by dankoos
http:///forum/post/3216143
I am getting the 700gph overflow from glass-holes dot com for my 90 gallon FOWLR. I found a used Sedra KSP-7000 pump for $35. It has a 3/4" outlet and is also rated at 700gph. I know my pump should be lower gph than the overflow, but figure the head distance (4-5 ft) will lower the gph of the pump so I should be good. Comments please???
I think you should be fine. The flow pumping against the 4-5' head will be much less that 700gph.
my .02