Hey all! So I've had my tank for nearly 5 months now, everything has been fine up until just over a week ago I got some neon tetras and they all rapidly died, I'm thinking they already had ich! And gave my other fish it too. Anyway I now have 2 guppies and 2 zebra danios, I am currently treating the tank with ich treatment and salt. I also raised the temperate for the first few days. The ich dropped off my fish and everything seemed to be getting better but since yesterday all 4 have been hanging out at the top corner of the tank. Does anyone know what it could be, is it the medication or the salt? The water levels seem fine. I really don't want to lose anymore fish.