350 ppm is pretty low. That's why they aren't super rich in color and more on the pale yellow side of things.. I would get it up to 600 and see how it looks. She should response ASAP. Seems a slight bit starved for nutes just reading the plants coloring. I run GH Flora Duo in my DWC's, which is similar to the stuff you have and I'm running 1100 right now so the metric is pretty large.
EDIT: I should clarify .5 scale and also that I'm using some other stuff in my mixture to reach that ppm (Silica, Rapid Start, Floralicious Plus, Cal Mag. Mammoth P). So not just 1100 ppms of Flora Duo flat out! So you should be able to get up a little higher with your nute mix.
EDIT: I should clarify .5 scale and also that I'm using some other stuff in my mixture to reach that ppm (Silica, Rapid Start, Floralicious Plus, Cal Mag. Mammoth P). So not just 1100 ppms of Flora Duo flat out! So you should be able to get up a little higher with your nute mix.
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