I think this is a zinc problem?

SDmmj

Member
I have a crop of sour diesel going now, and noticed the blelow pictured problem. I am in rockwool and using gh 3 part. I am using RO water. I have been having a problem with PH fluctuation. I will set PH at 5.8-6.0 and within 2-3 hours it will be at 6.5. any help is greatly appreciated.
 

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SDmmj

Member
also it is in week 2 of flower and there are only 2 trees with this, and it is not on the entire plant just a few spots.
 
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