ThaGreenBandit
Student of Herbal Alchemy
I'd read something similar to that in the past, but forgot all about it. Thanks for educating us, Blue!
I use those cheap yellow milwaukee ph pens. They are like 15$ on amazon, when one goes bad I just replace. I've had my latest one for 2 years now and its still dead on.
Damn, Jay! Let's get that calmag issue cleared up, bro. Hmmmmm, any local shops you can get a meter from? Could you try a continuous treatment, but at smaller doses so it doesn't throw off the pH too much?
Looks like it could be MG def showing on the older growth first Jay
i would get foliar feeding the underside of those leaves with 1 teaspoon of Epsom salts to 4 litres or a gallon (depending how you like your measurements ^_^)
here's one of my handy guide things that I kept which you may find interesting (as it seems to be about our biggest problem)