2 on a 75!? I have one and it's blowing everything around. Can't keep my sand in place. Positioned in multiple places and still can't use it in in other mode put the lowest.
#MonteeFrag LOL yes its a lot of flow and I don't run them at 100% I also run them in Reef Crest mode so it not the same flow all the time. My sand is a fine grain deep sand bed and it did blow mine around a little at first but the sand does settle down. Plus mine are high up and they do not face each other. Ones at the front on the side and one is at the back on the side.