Hi. I have ammonia 1ppm in my tap. When I do a 20% water change I dose the whole volume of the tank with prime so far so good. But the ammonia by the next day is gone but my nitrates are slowly creeping up. I am at 40ppm. I need plants that will soak up nitrates. Have a little wisteria floating but that does not seem to grow much and has little affect or I think it has little affect. Am I fighting a losing battle. Advice please. Not interested in using RO water. I have a 3rd tankiam ready to start and if I can't solve this I will just close all of them down. Willing to do the water changes that are needed but I don't know what else to do.