Speaking of the experiment (btw thanks jonthefb for that info)- I had raised my alk to 10-11 (slowly over 3 weeks) and through a period of a few months decided to go back down to 8 since my LPS and softies didn't seem to open up as much, grow, and seem happy. SPS corals appeared to be the same. After going back down, everything seemed to be.. well, happy. Just my 2 cents and I know I didn't provide any analytical flash of brilliance here, but over time, you know when things don't appear to be normal, although all the tests are in range. Happy reefing.