Can anyone give me a clue as to what needs adjusting?
3rd week of flower
hydro (ebb&flo)
temps-68 at night 73-76 day
NSR greenleaves at 1400 ppm with a tsp of epson added at res. change(every two weeks)
I'm reffering to the first 3rd of the leaf curling under.
It's only happening on about a third of the plants.
Lights are 600w about 18-22 inches away.
Rockwool grow cubes flooded 1x daily.