bavass
Aquarium Advice Addict
I do 2 5g water changes a week on my 55g. As far as getting your trates down. You can do a PWC every 3 days till they get to 20ppm. Once they get to 20ppm then you can either stay on top of it with water changes or start thinking about macro's to use as a natural nitrate reducer. Once they get to 20ppm it seems harder to get them down. Just stay on top of it and don't give up. I was at 160ppm at one time too. I am now between 2-5ppm all the time (Knock on wood) I am still trying to hit 0 and stay there.