I purchased a young betta a week ago. I brought him home and changed his water using half bottled water and half tap with water conditioner to eliminate chlorine. He got kinda sluggish and did not look good for the first two days. Then he perked up, started eating and paying attention to me. I was treating him for fin rot with a bit of salt as well. He was doing sooo much better.
After about four days I did a full water change, kept it to temperature and added water conditioner. However, I used only water from the tap - no bottled water this time. The next day, after a few hours of heavy breathing and disorientation, he sadly died :( I feel awful.
I want to be sure this doesn't happen again. I purchased a fluval spec so I can cycle the water. But if my tap water is bad...what should I do? It smelled like metal and chemicals...not good. Would a test kit help? If so, which tests should I buy? Thank you so so much for the help.