I have these things on my live rock. Not a huge infestation, but enough that I researched how I might get rid of some of them. I mainly see them when I stir up the tank and see their webs every where. I saw a guy who uses a laser to "cook" them in their tube. Anyone with experience in doing this? What I can't tell from researching it is if you laser them through the aquarium glass or do you need to do it from an open top? Thanks for any tips.