It’s been about three weeks dosing vodka. I noticed last night that a large snail I had was dead, shell completely empty. I don't keep them because I always had problems. This was a hitch hiker on something I bought a few months back and was doing fine. Could the Vodka have caused its death? I do have a black and yellow brittle star, which I had for 2 yrs, could this be the one killing snails? I have a bunch of baby snails in my sump prior to dosing vodka. I will have to see how many are there now. Usually, find them in the filter sock. I am concerned other things will suffer if I keep dosing. Any thoughts?