I got it 2 times already, and every time it was because of ph fluctuation +3 -3. Example 5.7 to 7. Check you ph meter maybe it need to be calibrated....
But maybe you had ph fluctuations before, leafs don't become like this in 1 day it takes 2-5 days. They should be fine if you will not see any new rusty leafs in coming days. + - 0.3 would not affect your plants
We came to the conclusion that its cal def and I'm waiting on the calmag to come in any day now. Thats why the leaves are so unhealthy. But would the cal def cause the brown roots too?
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