Ok, I'm going to put in my two cents if you guys don't mind. I've just skimmed the postings after my most recent post, so forgive me if anything I say is redundant.
I wanted to give an update on my foliar feeding with DG Pro-tekt.
I've been doing foliar sprays on my veggies for a good while, and have recently started doing them on my MJ plants.
I've never had an issues before except when they were in a high N soil and I included a dose of fish emulsion in my spray (slight nutrient burn); I lowered the fish emulsion and havn't had any issues. Until now when I added Pro-tekt to the mix. I have noticed several of my leaves have developed yellow spots. I've done some reading on other sites and it seems this is a common issue when using Pro-tekt.
I'm not going to stop using Pro-Tekt yet, but I am definitely going to cut the amount down to 1/4 tsp. I've seen this recommended on this site and others.
Since it is the only new addition to my spray, I figure this must be the culprit. This morning I flushed the plants, just in case, and rinsed off all the leaves very well. Going to leave them alone for a while and just water to let them recover. It is recommended on most nutrient bottles to use a 1/4 of the root drench strength, whild a couple recommend half. I usually use full strength on my solutions that don't add significant NPK to the spray.
I will keep you guys updated if you're interested.
Also, cholrine in small doses is fine and actually good for many plants. I've been using tap water all the way through this grow and have always used it in my veggie garden and havne't noticed a problem. I did an experiment not too long ago and it looked like the tap water plants did much better than the ro water plants.
Edit, I've contacted Dyna-Gro and asked them about the yellowing. Will see what they say. Mostly it's been about nitrogen lock out... which it isn't.