well already one of them died. no idea why the Ph was 8.4 and there was no ammonia or any of that stuff that would kill it. It was starting to get a black mark on its head, yet i didnt think anything of it as my danio has one as well. The male went in a shell last night and has yet to come out. I put a danio in as a dither fish to make him come out, yet he want. I have no idea how to get him to come out and am worried that he is dead. Anyt suggestion on either subject would greatly be appreciated.