Dhayden Posted July 12, 2006 Share Posted July 12, 2006 OK I have been trying to nail this tank down. I just did a 20% water change on the 9th. My top off water is RO with PH of 8.8, Kh 0. Now..... 7/9 PH 8.1 Kh 13 NO3 5 Ca 560 Mg 1400 7/12 PH 7.9 Kh 13 NO3 5 Ca 500 Mg 1400 The Kh makes no sense to me. Now this is 930am I tested the PH vs. maybe 3pm so if that kinda makes sense right? does it go down at night? Ca makes sense and Mg has been stable for a while. I just did 2- 20% water changes 2 days in a row to see if I could balance the tank out. My Kh had been pushing 20. Might have to ask Randy this one. Kh isnt supposed to go up right? On its own heh.7 Link to comment Share on other sites More sharing options...
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