two stressed corals.. can't find the cause

[bongobrian]

For about two weeks now I have two corals in my tank showing extreme stress. I wasn't going to even ask the question on here because I didn't think it would do any good. It seems like I've already gone through and checked everything that I'm sure you guys are going to suggest. Well I'm at a total loss right now.... I have absolutely no idea why the corals aren't doing well. Everything else in the tank is doing fine. Water quality is virtually perfect. Nothing was changed/added to the tank recently. The corals weren't close to anything to get stung. I've had this tank up and running now for a little over a month. The two corals are a Wellsophyllia brain and a bubble coral. The brain coral I've had for years now and has always done extremely well. The bubble I've had for close to a year. I started to draw the conclusion that it is my lps stonies that are showing stress but I have a euphyllia and plate coral that look completely healthy. I've been doing 5 gallon water changes for the past 3 days. Yesterday morning the brain started looking really good when the lights came on... it started puffing up nice and big and the feeders where even out. It got my hopes up but later on in the day it was contracted again. One side of the bubble coral tries to open up but it doesn't expand nearly as large as it used to and the other side stays shriveled up. I moved my tank a month ago to it's current location. Everything in the tank has been doing awesome until now. Ok so here are the water params even though nothing is really off.

salinity 1.023-1.025
temp 76-78 deg
ph 8.6 (perhaps this is the problem???)
alk 3.2 meq/l
calcium ? (don't test)
ammonia 0
nitrite 0
nitrate 0
phosphate 0

Any advice you guys can offer would be great as I am just sitting here shaking my head from frustration and confusion. I simply can't figure it out. Thanks guys!

[mrok12]

Brian,
I answered this on reefcentral

Mike