I did a test today before doing a 15% water change Ammonium was 0, Nitirte was 0 and Nitrate was 10-20, The pH was around 7.6, my community tank consists of some angels, gouramis and red lined torpedo barbs. I know that most of these species prefer a more neutral pH of around 6.8-7.2, should I worry if it is a little high? I am going to do another test tomorrow to see if it changed after the water change. I will also check my tapwater.