Do any of your leaf's look like this? And what is this, and what do I do about it. I thought it was potassium or phosphorus deficiency, so I added some Humic acid and bloom enhancer.
Thank you Friend for sharing your work with us. Very helpfulI figured it out. They are in rockwool in hydroton reverse osmosis water at 6.0 ph. My tent is at 75.F. DWC they water all the time. I left the water in too long, two weeks. When I changed water and a few days later everything alright now. I usually change after one week. I have been growing a long time and that's the first time I make that mistake.
I am growing Cheese Auto and Amnesia Auto. The first photo is Amnesia, the rest are Cheese photo.
Thank you all.