I started my plants about 10 days ago, under a 600w HPS, in a propagator with a fan keeping the environment around the propagator cool as the temp was getting too high at first, after getting advise from esoteric hydroponics they first told me to have the fan blowing directly onto the propagator but that caused the humidity to drop from 90 to 30 RH overnight and this stressed out the plants big time, out of the nine that germinated 6 have survived that terrible mistake but are starting to get better, the seeds are oasis from dutch passion by the way, the seedlings have 3 sets of leaves and starting there fourth (good leaves that is) all except for one seedling which is only 2 inches compared to the rest that are 4 inches, the edge of the leaves have turned yellow and are starting to curl under, on a few of the healthier plants they are showing signs of this too, can anyone help it will be much appreciated. I got ph and cf meters too, and a min max hygrometer and thermometer. Ph at 5.5 and cf at 12.
Cheers