Thank you very much Randy I'm going to get busy on this. I did notice that when my ph hits 8.4 (because my house is wide open for a day) my sps perk up much more than any other day and they really are struggling on an average day. My millie is just beginning to get some color but isn't fluffy at all. The piclopora is the same as with the few other sps frags. Yet my red monticap is beautiful and growing well. Also I have a hydnopora that is thin and not fluffy but when ph hits 8.4 it is. 8.0 is averaging day and night ph. Night is generally 7.8 and day fluctuates (while the house is closed and co2 scrubber is in use) 8.0-8.3.