elfo777
Well-Known Member
I've been growing for 8 months only (take my advice with a grain of salt), however your third plant has the same problem that I had with like 5 or 6 plants of mine.
I fixed it by lowering my ph to 6.0 (yeh, even lower than what I said; still, nitrogen gets absorbed very well with this ph. you can get as low as 5.8 ) and I stopped feeding nitrogen for one week. I also applied epsom salts. Affected leaves eventually turned yellow and died, but the problem was fixed. No more rusty spots on leaves. This is using biobizz nutes. I thought it was nitrogen deficiency at first. It looks very similar. But magnesium also causes lower leaves to yellow and calcium causes rusty dots/spots on leaves. And you also have a nice lush green (plant is well fed)
I fixed it by lowering my ph to 6.0 (yeh, even lower than what I said; still, nitrogen gets absorbed very well with this ph. you can get as low as 5.8 ) and I stopped feeding nitrogen for one week. I also applied epsom salts. Affected leaves eventually turned yellow and died, but the problem was fixed. No more rusty spots on leaves. This is using biobizz nutes. I thought it was nitrogen deficiency at first. It looks very similar. But magnesium also causes lower leaves to yellow and calcium causes rusty dots/spots on leaves. And you also have a nice lush green (plant is well fed)
