aagroves Posted May 12, 2011 Report Share Posted May 12, 2011 i have a community tank, and my main fish are my discus. ive been keeping discus for about 5 months now and I know that water quality is everything. my water is perfect. a couple of days ago I invested in the API kh and gh test kit. my kh is low which is good for discus and my gh is pretty high. question 1. does gh really affect discus fish? and how do i lower that? with rain water? something we havent had much of lately. question 2- I hear about every1 aging their water. what benifit does aging water have with discus? question 3- how do you age water? THANK YOUUUUU alyce Link to comment Share on other sites More sharing options...