Hello, I have been reading around more and just have a simple question. Are there really any safe/good chemicals to use in a tank. I myself am rather new to the fish hobby, and I really enjoy it, and just want to know if there are good chemicals to use in a tank and if there are what might they be and what might they do. I currently use Jungle Ammonia Chloramine Eliminator (ACE) and Tetra EasyBalance with Nitraban. I do normal cleanings/waterchanges everyweek and try not to overfeed my fish. I also regularly check & change my filter as directed. I just mainly want to know what I should and shouldn't use in my tank. I want to learn what I can now as I will be getting a much larger tank in the future and want to keep everything good and healthy. Thanks.