Which overflow box should I use?

[hihikeke]

I have a 90 gallon now, which I go for the 2 outlet one or the 1 outlet one? I have a mag drive 9.5 sitting here, the overflow box that I'm using now flows too slow, I guess the pump is too stronge for it.
Any good and affordable brand?

 

[nicetry]

You can always throttle back the pump. A ball valve or gate valve placed in the return line will allow you to adjust the flow so the overflow can handle it.

 

[spiked09]

From what I have read the best way to tone down the return pump is to put a tee in the return line. One line goes straight up to the DT as normal but the line that tees off should go directly back into the sump with a ball valve on it to control the flow going back to the sump. This will allow you to run the pump wide open.

 

[hihikeke]

Ic...is there any brand of overflow box that doesn loose the siphon itself? Beacause mine does it sometime

 

[stone]

Originally Posted by hihikeke
Ic...is there any brand of overflow box that doesn loose the siphon itself? Beacause mine does it sometime

What kind do you have?

 

[hihikeke]

This is the one I am using but without the powerhead, I got it from e-bay.

 

[stone]

Most people think Lifereef Prefilter overflow is the best handsdown. If you do a search it should confirm this. Alot of people have the CRP over flow I think due to the affordable aspect.

 

[nicetry]

Look at any of the U-tube design overflow boxes. THey are the most dependable. I use a Lifereef and love it. Had a CPR which I trashed. It's a poor design and would lose siphon regularly. THe U-tubes won't.