put the backside of your hand under the light, start about 2 feet from the bulb and move your hand closer until it feels very warm, now back off about 5inches and place your plants that close.

with this method im able to keep my plant sometimes 8inches from the tops(good air extraction required) and they need more light.

id start over if it was me they look bad and wont give you what your expecting, id personally look into LST'ing with new plants you will be happier if you did.

dont take me the wrong way i had to do this myself once and was pissed but after 30days of proper veg my plants looked 10X what they did, trust me its worth it.

here when my plants were 30days veg'ed to give you an idea