HI Al,Jaak I havent done a water change since i started cycling my tank, friday will be 4 weeks. My amomonia dropped from about Day 10. I only replaced a bit of water due to the evaporation. Think it was Jaquesb that said i must not do a water change while im cycling the tank. You might be removing the good bacteria.
I hear what you're saying but I have a Nano tank and i've got to be 10 times more diligent with maintenance. A healthy Nano requires weekly water changes. And I'm adding Seachem Stability and i bought cured LR from the start.