I have (or had) 2 six-line wrasses in my tank. They seemed ok, but then I did something that must have scared the hell out of them- two weeks ago I poured the water with kalk straight in the dt when changing water, making it very cloudy. I know, I know, I shouldn't have done that, but I didn't think it's going to be as bad, and was desperate to raise ph. Anyway, ever since that day both wrasses disappeared, and I haven't seen any sign of them anywhere. I checked the floor, the sump, the overflow- nothing. There's no dead bodies or skeletons lying around, so I'm thinking they hid somewhere underneath the sand. I'm just hoping they are still alive... is it possible for them to be still avolive even after all this time??