Ok so I have searched the thread and used the internet but I still could not get my question answered. My question is the reacurence of this happining? I have dealt with it twice in the past three month's. I know why it is happining and have gotten it to go back to normal twice now, but I was wondering will this always happen? I am sure and positive all this can be solved by moving the Arow to a bigger tank. But would still love to know if others who have treated this issue have seen this happen again in with the same Arow in the smae enviroment or after moving the Arow to a new tank? Ok I off to read more about this issue. I am pretty sure mine is getting it from backing up from all the scuffling in the tank that he is in. I know I need to move him soon (ASAP) so please be kind.