First time I've tested my water
I am just about to cycle my first planted tank, having kept tropical fish for a few years I want to take my hobby to the next level and also more seriously.
I have just tested my tap water parameters and can't work out what to do. It's the first time I've tested them in my new house, and it all seems rather high.
PH - 8.2
KH - 11.2 (200 ppm)
GH - 10.6 (190 ppm)
I'll be getting pressurised CO2 soon and from what I've read if I use CO2 at 50 ppm in the tank it will reduce my PH to my desired 6.8 however to keep fish this is probably much too high.
I'm not one for using too many chemicals and so wouldn't want to use a PH down product so is my only option to halve the KH by using a half RO and half tap water mix then use CO2 at 25-30ppm to get the desired PH? Or would it be better to use 100% RO water with some buffering product
If I use the half/half method what happens after a 50% water change? Surely my PH will shoot right up again and all my params will fluctuate for a while.
Or am I just plucking a PH of 6.8 out of the air as an unrealistic challenge?