None of them. I have a duncan, a zoa people eater, a ricordea florida and a leptastrea. Hard to tell if the reason is the pH tough, I had few drops in salinity/alk recently due to ato failing (now its fixed) so they also might be still stressed. It's just that I want to exclude one more problem from the list, so I will not keep wondering whether it was the pH.What type of corals are not growing?
I had also few frags dying recently but again, it is hard to tell why now.
If I can increase a bit the pH it will have the double effect to grant higher growth rates and help with dinos, plus in winter I will not bottom down to 7.5-7.6 like last winter.
Let's start with getting a probe and testing properly. Maybe I can also try to increse kH slowly with the doser and keep it more at 9ish rather than 7.5.