Serious Problem Helped Needed ASAP +Rep

alright feller. im new to growing but based on what you have said it could be the temps and that u havent giving them water for 5 days. have you checked the soil to see if it needs watering? and how much nutes did you use?

So you added the Humbolt once or have you been feeding them? What is the Ph of your run-off? Check for rootbound plants, especially since your problem started with the largest plant first.

I'd say that it's from the soil being too dry in those high temps. When i have little ones in 16 oz cups, they have to be watered quite a bit when it's hot, or I end up getting the same sypmtoms that you're describing. I'm not positive, but I think that the plants start eating thier own leaves after the soil gets too dry, and that's why they start yellowing. That's my theory, anyway.LOL

All you need to do is stick your finger down in the dirt and if its dry then water it and if its wet dont water it. I dont think its a water problem other than mabey you added to much nutes. Your ph seems good but a picture would help. Maybe try to keep the temp from 78 to 85 try not to let it go to high but I don't think 87 means its time to panic or anything.

Thanks for the replies...off topic but, does anyone know why when i try to upload pics it says a security token is missing? It gives me the option to contact the admin and i've done so twice with no response.