Do those cups have drain holes cut in the bottom? I had curled down leaves so I cut back watering and they got nice, long and straight.

Does that soil have nutes in it? Guano? Burnt tips could be nute burn, but those baby leaves (round ones) will normally wilt away. Have you yet checked the PH or flushed, sooner or later you will. I'm just throwing ideas out there, lots of variables could effect things.

Keep those small lights close, but not too hot either. Sounds like a fun little set up. Enjoy!
Ocotillo Reviewed by Ocotillo on . Plants showing discoloration plz help So me n meh GF are trying to establish a makeshift grow from a couple bag seeds and I built a lil' grow box with what we had around the house: reflector, a 35w n 2 20w CFLs, a lil cardboard box, aluminum foil, a old PC power supply n 2 PC case fans. The rig stays from 70-73 degrees, 20% humidity, and has constant airflow. We put the seedlings in some organic potting soil my GF had for some lettuce n other veggies from the summer. We are willing to upgrade pretty much everything but I think Rating: 5