I have been posting recently on how my water levels are high and so on. Well, I just found out why. I don't know why I didn't think of this earlier, but it turns out that my tap water where the city I live in contains some ammonia and nitrate.
I was told to not worry about investing in an RO but now... I am not too sure on that. I am really upset that my tap water contains all of that. I thought it was illegal. I don't want to keep doing water changes in my tank because of this... will it harm my fish? I feel like I am on limbo. I don't know what to do.