Pin point Ph & zoo issues

[danny zubot]

Hey Xtasia, sorry, I thought I had answered them.

Lets see.....

-I haven't been able to spot anything in or around the zoo colony accept that brittle star the one day.
-Thee are a few polyps left that are more like hard nipples, I think they are the ones that will recover. There may have been a few polyps that looked a bit mushy, but the rest of the colony is simply gone!
-My other corals are fine if only a bit faded. For the past couple of weeks I've bee ntrying to bring my CA and Alk levels up from when I was on vacation. Dosing quite heavily.
-Zoos are 2.5 year old by now.
-Fish include, 1 Bi color angel, 2 O. Percs, 1 Regal tang, 1 Red cheek anthis, 1 six line wrasse, 1 YWG, 1 masked rabbit fish.
-other, zebra (fighting) conch, brown, blue legged hermits, Cerith, Nerite, Turbo, snails, Olive snail (live under sandbed)

I think thats all, did I miss anything?

I can't dip this rock without ripping appart the whole tank, see pic below. Blue zoos in question are bottom right, which are 95% gone, but the colony left of them on the same rock is thriving.