Kush Farmer
Member
You have root aphids, I guarantee it. Just because you cant see them, doesn't mean they aren't there.
Unless you treat with a non-systemic chemical pesticide like Spectracide Triazicide, the leaf death will continue and the infected plants will be totally yellow before they mature.
Sorry, I know you dont want to believe this but....
In hydro? That is rare (not saying impossible). Unless they effect the rockwool they cannot colonize. It would be surprising if it's Aphids.