Well, I went back up and read some more. Looks like you are using BC ferts. Those are good. Just dunno what % you are using. IMO, I would never use 100% nutes unless I trained my plants to accept them, which takes "stepping-up." I always hypothetically use 80% or less. And that is after working my way up from 25%, 50% and 75%. I am also using rockwool. You are using soil, right? Soil has it's own "nutrients" so adding more, at a higher %, can easily burn the plants.

Oh, and I forgot to ask, Are you sure you are not overwatering? (Due to the droopiness of the plants)