Thanks, guys. PH is about 7.2, and I have not measured gh, but I can tell you that tds is about 70ppm right now and I'll be lowering that even more with R/O water.
Absolutely amazing as usual. I have been saving all of your pictures and am planning on putting them together as a photo book (for myself). I hope you don't mind. You should do the same and sell them, I think you could make a nice profit out of it. Seriously. It would be a nice way to finance your hobby.