OK, good stuff!

I think I will stick with my RO+CalMagPlus for now, just to limit the number of variables being changed at one time. I will definitely consider trying the tap+phDown idea in the future as it would simplify.

I think you've mentioned that you grow in a very dry region, which is why you can add moisture (water or ferts) to you pots almost every day. When you add moisture, do you add till you see run-off? Given the 60% humidity in my basement I don't know if I should follow your lead on that schedule The basement has been low 70s lately, so I'm just going to put the exhaust fan on 24x7 which will ensure a pretty constant 60% humidity in the flower chamber.

Thanks!!