magnetic ballast, phillips bulb and parabolic reflector. I use DE because oft the technology. Start up cost is always a initial large investment. Just like me you and jedi have all made. We don't NEED fancy bulbs and expensive undercurrent systems. We use them because we know what we're doing and can afford it. I learned just like everybody else starting off "you get what you pay for" always applies with hydro equipment. I feel if I could rent a outbuilding and hang 32 lights, DNF nutes, well water, promix in grow bags I feel i could push out 1$ grams and make a comfortable salary. I would need 100gpd+ license and the patients would have to take all product produced at 1$ it's not ideal but it can be done...I'm sure some were it is being done in a greenhouse