OK, moved them into larger containers today (17g), I don't really call it 'transplanting' because it's just to a larger tub (DWC) and ZERO shock to the plants (I just move the net pot lids to the new tubs). Allowing for airspace above the nutrient solution, there is aprox 10-11g nutrients per tub. I also added a 2nd air stone to each tub. The slight discoloration you see on the roots is caused by 'stain' of the micro nute of my 3-part (Cutting Edge Solutions). Dumped the existing nute solution and mixed fresh, got lucvky and have an even 6.0 in both new tubs. Lights are aprox 12-13" above the plant tops (LUSH Herbal Vador 2x) note: the minimum recommended manufacturer distance is 18" above - I have grown these from seeds/seedlings too close to the light so they are well adjusted.