Phillip Posted May 25, 2022 Share Posted May 25, 2022 I have a small stock tank outside. I initially filled it with water from the hose. I haven’t topped it off with hose water anymore since the rain has been keeping it full. I sampled it today and noticed the kh is zero. I have some apistogramma sour there so the softer rain water should be good for them. Should I be worried about the low kh? Should I add something to help raise the kh? If I added something, is there something that won’t raise GH also? Thanks! Link to comment Share on other sites More sharing options...
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