I was away from my tank this weekend, until today. One of my Sunset Platies was dead in the tank. I took a water sample and tested it, but the water is showing no levels of ammonia, nitrite, and while I know it can be inaccurate on the low end, less than 5 PPM
I have no idea what could have caused this fish's death. Do you guys have any ideas of what else I can check for to make sure my tank is doing okay?