be very careful that your plants are getting adequate air flow. Seedlings are very vulnerable to a rot called 'damping-off' or pythium wilt, which causes them to get thin rotted stems and fall over, and comes from too much humidity. You should start opening the dome for about a half hour at a time, a few times a day, to get them used to normal air and prevent this. I never put seedlings under a dome personally.
They are ready to feed when they have 4 sets of adult leaves and are working on the 5th.
stinkyattic Reviewed by stinkyattic on . Seeds in the dome question Can anyone tell me how long I can keep seedlings in the plastic tray/dome/rockwell plug combo.... it is around 71F has a 18" floro plant/aquarium light on top....the dome is 7" tall ....started Dec 29 so far 17 out of 32 have popped up ..... I'm waitin for my cab to get here to put them in but it is delayed at the border for how long I don't know.... not sure when or if i should use a nute in the bottom tray or use some kind of foliar spray while in the dome thanks in advance for any replies Rating: 5