4 1" overflow handle 1100gph???

[rottbo]

I am setting up a 150 tall for my brother and am using an 1100 gph in the sump would 4 1" overflows handle the flow or should I go with 1 1/2" ??????

 

[rallysman]

1" should be fine. More than enough probably

 

[rottbo]

cool I am gonna set it up so two of them skim the surface and two skim the bottom

 

[rallysman]

cool I am gonna set it up so two of them skim the surface and two skim the bottom

That's going to make it harder to match flows. I'm sure you've got the power outage issue covered, but doing that you'll have to match the pump exactly to the siphon of the overflows. Asking for trouble IMO. It's easier to put a power head in the bottom for circulation.

 

[eh1421]

should be more than enough bro

mike

 

[eh1421]

just make sure you set it up so the ones at the bottom have to go up before exiting the tank and you should be fine.
aka make sure you have a siphone break at the top so you don't have a mess if power fails

mike

 

[rallysman]

just make sure you set it up so the ones at the bottom have to go up before exiting the tank and you should be fine.
aka make sure you have a siphone break at the top so you don't have a mess if power fails

mike

you'll still have an issue with matching flow rates that way.

 

[ethnics]

i dissagree rally. i have mine sucking from the bottom but there still overflows. it all depends on the pvc on the back of the tank that determines height of water inside. i have 2 1" overflows pulling from the bottom with 800gph. 4 1" overflows should be fine, and 2 on top with 2 on bottom is a great idea. i needa make 1 more to skim my surface.

 

[rottbo]

I have 1 1 1/2" overflow on my frt tanks that handles 700 gph and sucks from the bottom if I had gone out and bought a new camera I could show ya but I am a lazy bastard... maybe I can hook my camcorder to the com.... I never have before though....

 

[rottbo]

they will all have siphon breaks on them I will dram a stupid PAINT program to show ya my thought on design