Lighting sure has come a long way.
Shortly before I ever grew my first plant, there was a small hydro shop in Davis California where I used to hang out with the owner and scratch my itch for knowledge. I was fresh out of the military and it become a place I'd spend a few hours of every day. It was a small shop but the owner was always looking for products that were cutting edge at the time. In the store front window we'd set up all kinds of contraptions like light movers, the first ROTO garden and one of these... It ran a 400 HPS and 400 MH at the same time and could probably be considered the first double ender. Have a little laugh and read the comments from 14 years ago!
BEHOLD THE FUTURE