Yellow Leaves!

[Mtnfun]

I'm growing 2 AK-47 plants in soil. Day 25 of budding. This yellowing happened overnight. I had let them get a bit dry. I correct PH to 6. I gave nutrients 4 days ago but went very light (1/4 strength) as I had a touch of nutrient burn before, I think. Any ideas? Thanks!

 

[Emilya Green]

I'm growing 2 AK-47 plants in soil. Day 25 of budding. This yellowing happened overnight. I had let them get a bit dry. I correct PH to 6. I gave nutrients 4 days ago but went very light (1/4 strength) as I had a touch of nutrient burn before, I think. Any ideas? Thanks!

what was your indication of nutrient burn? You are at the hungriest part of the grow, and I would think that 1/4 strength is a bit light and maybe a bit of an overcorrection.
The burned spots and crinkling leaves looks like a magnesium deficiency. Get some calmag+ in there, and try a foliar spray of epsom salt for a few days till it takes hold.

 

[High Wally]

Looks like potassium deficiency. Check pH. Cheers!