Hi. My plants r 3 wks old started feeding half dose of dutch pro on wk 2. Can u help the top leaves have stated curling up and a bit of yellowing on lower leaves. There under 600 watt hps now with air cooled lamp at 24 inches away. Temp is around 78 humid is bout 50. I have an intake fan pulling fresh air from outside. Think it's over fert. Appreciate ya help. Cheers
