I use collected rainwater. It is 7.0 ph.
When I add my nutes the solution drops to 5.9.
I use “Ph Up” and bring it to 6.5.
I have them in a 50/50 mix of FFOF and FFHF.
Does the ph up or ph down products add salt?
I want to give them pure rainwater every so often. Should I ph down it or is 7.0 okay?
Should I get a TDS meter and what should my testing parameters be? I’m trying to not lock out any nutes by keeping ph and ppm in the correct range.
So far so good but I want to learn more.