Can you get us a runoff pH number as soon as possible?
The HydroHuts made about 1-2 years ago outgassed toxic fumes that killed plants.
But you have other stuff going on, like the taco leaves that say your heat is too intense and your humidity too low.
Those stripes DO resemble damage from a severe Mg deficiency but don't look quite right to say for sure. Even so, making up a spray bottle of 1/2 teaspoon epsom salts per quart of water with one drop dish soap, and LIGHTLY misting the plants with it, NOT ON THE BUDS!!!, will halt the spread of Mg def if that is what it is, and not harm the plant if it isn't.
But get that pH number asap. You may need to do a heavy flush very soon.
stinkyattic Reviewed by stinkyattic on . Bright Yellow Patches & leaves Turning Down, & Some plants turning up! - Any Advice? Hi all, this is my first grow, sort of a fumble my way through job! my plants are into their 7th week of flowering now, we only started using nutes since week 4, but only in light amounts the plants are generally healthy but over the last few days one has had problems with the leaves turning down & bright yellow almost dayglow patches on the dark green leaves, any ideas what could be causing this? some of the other plants leaves are turning up, as in the 3rd picture, is this a symptom of Rating: 5