Which Eheim return pump???

[banditpowdercoat]

I also am looking for submersable pumps. I have a 45G in the works, with a closed l;oop manifold style return, but the return is coming from the 15g Sump. I was thinking of a Mag 1800,but would that be to much flow through the sump? I was only thinking tank turnover, not realizing how much is flowing through the sump. My setup is not set in stone yet. I do have space I can hide a submersable in my Overflow chamber. The main reason I went closed loop manifold style is I do not want powerheads visible and sticking to the glass.