Have a question. My RBTA was healthy and within the last few months it has started to bleach out. Also the tentacles don't extend out as much as they use to either. Bleaching out seems like it started right after it split. So is there any way to bring back its color or I am stuck with a neon pink bubble tip with short tentacles? Is it lighting, my bulbs are over two years old and replacements are on the way. Or could it be water chemisty?