MH is the best way to go for lumens-per-watt efficiency but you also have to consider the heat load of the different types of lamps. And you are leaving out a personal favorite of mine, which is a T5 fixture. I use one for starting seedlings- 24" New Wave with 4 bulbs- works GREAT.
stinkyattic Reviewed by stinkyattic on . MH light or CFL'S :smokin: What is the benefits of using an MH light compared to useing cfl's. Can I get the same results of a 200 watt MH light using 200 watt cfl's or is using the MH the best way to go. :stoned: Rating: 5