Yesterday I got a female betta from petsmart, brought her home and after an hour of acclimating released her into my 5 gallon tank, water was 76 degrees, had a heater, so no heat shock, and was conditioned. A test strip showed nothing wrong with the water, but by this afternoon she was dead. (employee said it might have just been weakened by shipping).
I went back to the store and had them double check the water, the strips showed nothing, so I rinsed out the tank, conditioned the water which is 78 degrees and let my new guy go after an hour of acclimating.
The problem is he seems lethargic after about an hour, just sitting at the top, much like my female did last night, so I've got him floating in his cup from the store (in his original water) at the top of the tank. The petstore is less than a mile from my house so I can't imagine the water is drastically different, but I don't want to wake up in the morning and find him dead. Suggestions?
Should I go out and buy bottled water?
I had another betta a couple months ago. She lived for two weeks with no problems in water that I had not treated but had left to sit out for a week. She died after an untreated water change that I only let age for 2 days. Fish can live in this water, so I'm starting to wonder if its the lack of aging or the tank. I did get it off of craig's list, but I let it soak in hot water several times. I can't figure out what's wrong.