Ohh that is really good to know. I'll keep an eye on that and see where the pH lands. I'm not actually to upset with a little slower growth, I have some anacropora that is going like an absolute weed.Just a quick comment. I routinely switch back and forth between kalk and two parts and hybrid. Always trying to find a way around the kalk wall.
Anytime I switch fully away from kalk there's the inevitable alk consumption drop due to lower pH. It's not huge, but its there. Be aware of this when switching away from kalk.