I run seedlings in ~60 mL 6-pax of unfertilized seedling mix, under a T5- 4 bulb fixture at ~4-6" until they are large enough for the first transplant and feeding (into 3" pots at 5 nodes).
Then they go under a MH400 with Horti Blue. Growth explodes at this time.
stinkyattic Reviewed by stinkyattic on . perfered lighting? which lights should be used for fastest vegetative growth in the seedling stage. t5 or a 400W metal halide. Rating: 5