I know this is a wierd question. But I am just worried about putting my arms in the tank since well..........I have poison ivy on both of my forearms and I was curious if it can effect the aquarium. I have heard that it can't from one of my LFS's and now I am just going to clarify it with you guys. The LFS said that it can't but that (and I knew this part would definately effect the tank) the lotions and other poison ivy treatments will. Also I was curious if I used poison ivy soap in the shower and that it was washed off if it would be ok or not? I was just curious because of the urushiol oils. Thanks!