Yeah over ferting seems to be a common problem w. hydro if you don't pay attention. Luckily you can flush em out pretty easily. Nice compact plants, they are filling in nicely. I noticed not a ton of secondary shoots, any reason or just the way the strain grows?

Great work thus far, I think you are going to have a nice ass harvest. What size trays are those? I see you have 16 plants on each...maybe a 5 by 4?