Which return pump??

[kingspade]

125 rr Dual corner overflows what should i run for a return, i was looking at a mag12 but am thinking that may be too small how bout a 12 or 18?? any suggestions?

 

[jumpfrog]

I have the same tank and I use a mag 12 and run it wide open. I heard others use a mag 18 though. A consideration is head heigth and whether you have a straight shot back to the tank. My 12 sits in a sump directly below so the head is about 4' or so. I've teed off the 12 to feed both returns. It may not be optimum but it does work well for me.
Cheers

 

[kingspade]

i may be putting a uv sterilizer in the same line, so maybe a mag 18 will work good for me?

 

[fishy7]

Iwaki md40rlt
Sequence pump by Reeflo
couple pump suggestions to research.

 

[kingspade]

are those submersible or external?

 

[fishy7]

External.

 

[funkyman]

I use a Quiet One 6000 ran wide open. The return is split for each side of the tank. Head height is about 4'.