I'm not running closed loop. That seems like the option to go for big tanks? I just don't like all the PVC plumbing. Got 1 RD230 for the 4 seaswirl returns. 1 RD180 for manifold. I assume I'll be running both on low %
haven't calculated the flow numbers yet. I just wing it by how my fish swim. haha.. I was thinking a few MP60s at first and then add more as SPS grows. but now I'm really liking the Panta Rhei ECM63. seems like 1 can push the whole tank. Less power, less heat, less controllers. Cheaper than a bunch of MP60s.
just can't find many users with these German pumps