I have a cotton cand torch that all of a sudden today is not extending! It's never don't this before and my joker torch seems fine. I'm sure what could have happened and what to do about it. I noticed this white thing on it. It kind of looks like a worm but maybe it isn't. I feel like it's been there since we got it and we dip our corals before entering the tank. We have had this torch for a while now. Can anyone help?