Yes, it has all the N they need. I use the Lucas formula with Floralicious Plus (N) (1 ml/gal) and Liquid Koolbloom (P-K) in weeks 2-4 (5 ml/gallon) and 5-6 (7.5 ml/gal). Both are GH products on the Keep it Simple Recirculating Program. Alone the ppm is ~1300, when I add Koolbloom and...