I have one of the first trons. It is about 3 ft tall and uses U shapes flourescents. It was given to me, I did not buy it I had to replace the ballast and the lights. While I was at it I converted it to a flood and drain system and for what it is, I got a good crop from it. All my friends were asking for more. I reveged and got a second crop. Then lost a timer and was gone a couple days and my crop fried, not the fault of the tron. LOL I am thinking of starting it up again. For the operating cost, you can't beat it. If you want bigger plants and tighter buds go with HPS and don't look back.