Just mixed up a small sample of 2 parts tankwater with 3 parts kalk/RO. pH is 10.10 and SG is 1.013. Later this afternoon when Chris comes home, am going to dismantle the rock in the small pile and soak the two rocks I suspect the worm might be in. If I don't find it in those two, will move onto the other low rocks, then work my way up the pile.
Am somewhat concerned about the button polyps and shrooms on two of rocks the worm might be in. Thoughts, comments, concerns
