Help.....Cranky GSP

[Barrett.Oliver]

I have two colonies of this stuff.
Over the last couple days it has completly closed up and refuses to open back up. My water parameters are fine(as they have been double tested to check for bunk tests)

Temp - 78.5
Sal - 1.025
pH - 8.0
trites - 0
trates - 0
amm - 0

Does anyone have some insight as to why they may have closed up? With the exception of a couple of sponges and minor detrius nothing I know about is harming them? I'm doing regular water changes weekly(10%), keeping an eye on all of the above parameters and everything else in the tank seems to be doing great. Thanks in advanced for any help anyone can provide.

Barrett