@Shadey I love 600’s I have lots of them the ones I am running right now are
Lumateks one has a date of '04 and the other is '07 so I have had them for a while
have a couple of 220 volt double ballasts that run 2 - 600 watt bulbs
I do agree the two 600s will bury a 1000 watt in a 4 x 8 space but I would like to run 3 - 400 watt lights
over the 4 by 8
too lazy to dig them out and I am only running the 600s at 400 watts at this time
I have always like the 400 watt lights the best easy to get anywhere, cheap to buy, cheap to
run and in a pinch you can buy a bulb at home depot
just need to keep the plant at 40 inches tall from the top of the pot
all the best and a happy new year
Dequilo