I have a 90 gl w/ nothing but lps corals. I have 4 maxi-jet 1200s mounted to the back of my tank, attached to a wave maker. My frogspawn never really seemed to extend fully as well as my elegance. I recently unplugged two of these pumps, and the result was dramatic. These corals plumped right up, and I should mention I saw no ill-effects on my other lps or sofr corals. I would have to say just play with the powerheads and position of the corals until you and they are happy.