Need Water advice
I am starting to set up a 75 gallon planted tank with co2 and almost 3wpg. The substrate is flourite with a few pieces of driftwood. I have not added any plants yet because I wanted to let everything level off and give myself time to learn the CO2 equipt.
My water from the tap is:
PH 9 originally 7.0 after sets for 48hrs
Water in Tank 6.4
I have very soft water and the issue I have is that due to the extremely low KH, I can barely get any Co2 without tanking the PH. Any thoughts on what to add or what would be the optimum PH value/ KH value?