Sumseeds

imho change of nutrients wouldnt be too bad so long as you're watching the ppm/ec, a healthy root system makes the whole plant very tough. I usually supplement my grows with doses of IBA. just going on the info above I would have turned up the lights or put them closer. I'll put a little observation on my diary 1 to show you the difference of good lighting.

She looks hungry! Bring the ppm up to 900, needs some calmag! When do you switch to flower? I'd do it now if not 2 weeks ago. She won't fit in your tent.