Need advice. Planted blue mystic into rockwool then into dwc hydro. Today is a week since sprouting and temp been averaging early 20s. 24hr 125w white cfl. Splashed with a bit of Ph down but OK. Problem is its wilting even though its looking healthy enough with new leaf sets coming through. No nutes yet. Unsure humidity coz hygrometer broke. Rockwool too wet? Water is below bottom of netpot. Switching to 18 6 tonight. Any comments welcome. Cheers