I have a pink cucumber that has wound up on the back side of a rock on the back side of my tank. She's been out of sight so long that I had forgotten about her. She's lost some weight, but is still very pretty. I'd like to either sell her to someone, or at least move her up front where I can readily feed her until she's fat again. Is it ok to just pull her off the rock? How can I detach her without hurting her?