My 12" rose anemone hasn't been opening 100% in the last week or so. It has this stringy gut-looking stuff coming out of its mouth. I read that is poop, but it isn't pooping it out. I think was over feeding them and the food is rotting inside of them. I only feed them once a week now. I'm not sure what is happening. What can I do to make the anemone better? All my parameters are fine. What is happening and can I do anything to make it better? The tentacles are not very sticky.