90rr is about the same as a 75 so i have an mp40 on the same side as the overflow and an mp10 on the top right on the back of the glass. both of reef crest and using an eheim 1260 return as you can see in the video:
http://youtu.be/ipYrX5Hklq8
I have 180 and have 2 mp40 one on each side but need more flow what would you guys/ girls suggest ?and for the return I have a bluelind 40