Wow nice thread. I so have a question though, it was discussed briefly but not a very solid answer was given. Will I be able to keep crypt inside shrimp tanks without worrying? I have heard if the leaves melt or a cut, deadly toxins are released that have the power to kill shrimp. I was wondering if there was any evidence behind the belief or if it is "busted". I always loved crypts and used to have quite a bit, but got rid of them because of that belief. Thanks in advance!