Thank you. There is a lot to learn in this hobby!
I've had the tank running for about a month now and haven't done a water change yet. It's been strictly planted for 3 weeks while it was cycling (or so i thought). Still have a a debatable 0 reading on nitrates. (those test strips are damn near impossible to discern between the lowest values, just ordered the API master test with the liquid.)
Should I perform a water change soon or wait until I have a more solid reading? Maybe the Purigen slowed down my cycle. Also, there isn't much of a bioload right now. (3 RCS, 2 amano, 1 oto)
I would start water changes as soon as you set up a tank; it is best to start with a couple per week for a while then gradually slow up to one a week.