rust burn

I’m running coco dtw, week 5 of flower, strains are grape smash, northern lightsx willie Nelson and sournanadubx Wilson. Have them on automated water, 5 times a day. Been feeding at about 1100ppms. yesterday I noticed the Run off was extremely high. One plant was in the 2000s. The plants were...

Have this strain called coffee cookies. I just got done growing a couple months ago and didn't have any discoloration on the leaves. This grow is a little different, I am seeing what looks to be like "rust" if you will? I'll post a couple pictures but was hoping to see if anyone has any idea if...

First Time Grower (day 16 from seed) I have been finding rust spots and discoloration on the leaves and I’m not sure what to do about it. I noticed it 4 days ago and it has shown up more and more. I was told the seeds where “Kali Mist” I have cut the leaves off since they looked beyond the...

At first I thought it was a cal def until I saw some newer growth with these brown spots also on mid and bottom fan leaves. As im doing more research on the blotches I see it could be p/k def or a rust burn? Its only on one plant and It first started to appear after a 2nd foliar feed with MgSO4...