Just been reading through your posts and I'm wondering whether, in your absence, could your fish have been accidentally overfed by your mom? With the tank already being overstocked, higher levels of uneaten food would have contributed to an ammonia surge.
I had a similar problem when I moved out of my house and my mother moved in (renting from me) and I couldn't take my fish until I had a new tank set up to move the fish over to. During the few weeks they were in mum's care, the water quality dropped and it developed a bacterial bloom.
I couldn't understand why as I had told her only one pinch of food a day. Anyway, when I asked her to show me exactly how much she had been feeding them I was SHOCKED!! Her idea of a pinch was enough to feed them for a week! Plus she admitted that sometimes she gave them "...a bit extra because they looked hungry"!!
I had never-ending water changes and gravel vacs to do in order to put things right again. Fortunately, I didn't lose any fish! But if I hadn't popped round there when I did I hate to think what would have happened a day or two later...
Regards
Athena
I had a similar problem when I moved out of my house and my mother moved in (renting from me) and I couldn't take my fish until I had a new tank set up to move the fish over to. During the few weeks they were in mum's care, the water quality dropped and it developed a bacterial bloom.
I couldn't understand why as I had told her only one pinch of food a day. Anyway, when I asked her to show me exactly how much she had been feeding them I was SHOCKED!! Her idea of a pinch was enough to feed them for a week! Plus she admitted that sometimes she gave them "...a bit extra because they looked hungry"!!
I had never-ending water changes and gravel vacs to do in order to put things right again. Fortunately, I didn't lose any fish! But if I hadn't popped round there when I did I hate to think what would have happened a day or two later...
Regards
Athena