okay so I used britewell for the first time yesterday. couple hours after everything seemed OK. today all my corals and fish seem fine. starfish shrimp everything seems ok. but I have 3 BTA's. two purple tip GBTAs. 1 RBTA. they look ok bubbled and stuff still. but they are tucked up to half of their normal size. not too worried, but it is definitely a behavior I have not seen in them since I got them. And all three are showing the same half-opened behavior. thoughts? Third is on the bottom right of the tubs.