Max GPH flow through a 1" drain HELP

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michael

michael

Tri-State Fish Hoarder
MFK Member
Nov 3, 2005
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Im ordering a new 360 gallon tank and they want to use a 1" drain and 3/4" return in the overflow. Whats the most gph I can get through this? I have the same fittings on my 210 now and use 2X 1000gph pumps and its fine. Can I use two mag 18s you think? and get 3600gph through the 1" drain and back up through the 3/4" return?
 
michael;1749521; said:
Im ordering a new 360 gallon tank and they want to use a 1" drain and 3/4" return in the overflow. Whats the most gph I can get through this? I have the same fittings on my 210 now and use 2X 1000gph pumps and its fine. Can I use two mag 18s you think? and get 3600gph through the 1" drain and back up through the 3/4" return?
Click to expand...

why not use at least 1.5 inches and 1 inch.......:confused:
 
michael;1749521; said:
Im ordering a new 360 gallon tank and they want to use a 1" drain and 3/4" return in the overflow. Whats the most gph I can get through this? I have the same fittings on my 210 now and use 2X 1000gph pumps and its fine. Can I use two mag 18s you think? and get 3600gph through the 1" drain and back up through the 3/4" return?
Click to expand...

i use 1.5 inch feeds to my 3000 gph pumps... i would not go smaller
 
What would you suggest for the return line size?
 
:iagree:
 
I use three 1" drains on my tank, the Iwaki pump is rated for about 1100 GPH at the head height I have. If I plug one drain the other two keep up, but just barely. My tank is only 135 gallons, I think you definitely want at least two drains or one 1 1/2" drain for a 360.

drains.jpg
 
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