Lights are led? Cause your pick is cfl??? I hope it is led, because while you can grow with cfl it's not the best more like the worst. Not hatin', just sayin'. Maybe you were just using for seedlings. I think Rollin_along and Tycho are right. I did a grow last Feb and temps were low. I added my 2nd light, which added some more heat and then they took off.Some more information
Plants are in a grow box (171cm x 61cm x 61 cm)
Medium: Soil
Lights: LED
Nutrients: a basic grow fertilizer (19-5-20)
Tycho: I’ve thought the same thing, that the temperature is too low.
Lol @Mcdee I thought the same thing , then realised it's two people jumped on the same thread. One I think needs a reflector on the CFL and the LED looks like small strip lights not an led grow light. You need around 200 actual LED watts for 4 or 5 plants minimum.Lights are led? Cause your pick is cfl??? I hope it is led, because while you can grow with cfl it's not the best more like the worst. Not hatin', just sayin'. Maybe you were just using for seedlings. I think Rollin_along and Tycho are right. I did a grow last Feb and temps were low. I added my 2nd light, which added some more heat and then they took off.