Happy Shatterday Brotha
How To Use Progressive Web App aka PWA On 420 Magazine Forum
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Magnesium is one of the easiest deficiencies to tell… the green veins along with the yellowness of the entire surrounding leave is a dead giveaway,
I'm not even sure what the issue is. My guess is it is a PH thing. I'm in rockwool and I rinsed it really well (I thought) for 24 hours, and added 5.6 PH-adjusted water to help bring/keep it down. Still I read over 8 PH for it so I flushed it again. Once my clones were added to the rockwool they looked good for about a week, but started looking like nutrient burn set in even though I used only water at first and then VERY weak nutrients (GH Flora series). It got worse and now appears to have stabilized - I hope. Maybe I finally got the PH down where I think it needs to be. Everything added has been at 5.5-5.6 PH. One plant is much happier than the others. One plant is much more unhappy. All have gotten the exact same treatment but each one is a different strain. The "burn" always begins at the tip of middle-ish leaves and progresses along the edges.
Here is an example picture I'm ashamed to show: