My question is not base on regular water change on a daily basis. I'm asking if it's nacessary to change the water during the cycling process, because it seem to be stuck. Yeah, STUCK! It's been almost 4 week, my nitrite is stuck at 4.0ppm, Ammonia is stuck at 0.50ppm. I've been to a couple of forum and they say that a sign of High Nitrate peak is a sign of it going to be done cycling. My Nitrate is probably at 160ppm or over and Nitrite isn't going down and so is Ammonia. Any suggestion what i really need to do? Thanks a lot. I hope everyone can help me on this.