not sure but i have a mag 18 for mt 55 gal check out my thread in the diy fourm 55 from the start it shows the manafold im useing and more.
leave a post tell what you think
Wow you sure have come a long way there, it looks incredible. Your return seems to be an open, I was going more for the closed loop to not have pressure loss at the ends but thanks for the awsome pics looks great.