yea i vegged under my mh last year and they LOVED it big time....im on my second grow with my mh but took a different turn this year...decided to vegg with compacts cuz it helped save on electrcity and plus they did like the compacts staying nice and short , compact .....i cant afford the hps for this grow ...altho i do have plans to get one for the next grow.....you do have nice bud production for 2 weeks flowering...hope my northern lights and afghani look that nice in 2 weeks ( just ran my first 12 12 cycle....) ....PEACE