So I'm assuming these are all vermedit snails. Picture below, dead center, is the big tube. I cut that as low as I could with bone cutters and cut a portion of the worm, couldn't get the rest. Used the cutters everywhere below the tube I cut off to kill it. Not sure if they can regrow. Below this pic I have hundreds of little clearish tubes around the tank. I haven't looked that hard for the big ones but I haven't seen any. Are all these little ones the same? There's no way I can remove this many as they are on all the rocks.