Today I noticed a tiny hermit crab hanging out on the backside of my overflow. This is interesting seeing as I treated the tank with cupramine at a level of .5 for 30 days and have not added the snails, hermits, or live rock back into the tank. How is this possible!? I tried getting a picture but he disappeared into the overflow later that day. Very interesting. Also not only did my pod population survive, but the population exploded to numbers I couldn't even try to quantify. Bristle worms died within days. Luckily the lionfish is seeming cured of parasites and healthy as a horse 6 weeks since I started treating with copper.