Help with autoflower

My leaves are starting to droop and im starting to worry. I have 2 amare 300 cob lights in a 4x4 tent and 4 plants in FFOF soil. They are being watered in pure water phed to 6.0 with a very low dose of GH rapid start root enhancer. Im having a bot of trouble keepinh air humidity above 50% WITH a humidifier. Is this a bad thing or will she be okay? And what can i do to perk her up again?

She don't look to good.. Only thing I can think of is the nutes. You don't need nutes with FFOF until the middle of flower.

Those lights are intense. Make sure you keep them at 24" with only the surrounding 5w monos with the COBs off to start and veg them to flowering. Flip the COBs on to flower at 18-20" with no lenses. 6 is a little low for soil, bump your pH up to ~6.7. FFOF has plenty of nutes for seedlings, especially nitrogen for vegging up to flowering. It's too young for any nutes at this stage. If anything, you should be supplementing with a light dose of bloom boosters one they get to ~3"+ with the autos since they start flowering a few weeks after sprouting.

in most cases FFOF needs diluting with 25-30% perlite

to avoid these nute burnt moments ..lol

good luck