Im trying to sprount and veg with 400 w hps- i got a humidity dome- how long should i keep the dome on for?
Well, i thought you only used a humidity dome for clones, but i may be wrong. Firstly if your waiting for a sprout, you dont need the 400HPS just yet. Place your seedling in your humidity dome, spray the dome and leave in a dark place overnight. Then once your seeds have sprouted above the soil, put 'em under light.
the seeds have poped out of the soil --- the tap roots are getting bigger n bigger can the seed but not the tap root dry out?