I would DEF recommend a ph pen. I never tried using a magnifying glass. What mag is it? x10, x25?
Edit: I've been trying to find something to use that would make it easier to take close up pics.
So after dealing with all of my ph & cal/nag deficiencies, I am coming towards the end of this grow. Thankfully. LOL
I am noticing that some of my buds have brownish discoloration. What causes this?
He really does look ripped. Lol
One final question for you. Would it be a good idea to flush before I use the PK Booster? According to the FF sched I should flush this week, but I am wondering if I should wait to flush until the very end of the grow.