I have been thinking about the tank a lot . I have been looking for ways to get corals to grow faster. Thus, ways of keeping PH up, but in so doing, the tank lost stability. I think I'm going back to simplicity with just the calcium reactor. I'm not going to worry about PH; my new goal is just stability. The only thing I might do is run a fresh air intake from the outdoors to the skimmer. Let me know what you think.