I guess nobody remembers that Al B. was an E.E. by training and posted no less than 20 times the breakdown on efficiency btween 1000s and 600s.
600s will give you nice lollipops but 1000s will give you a stand of donkey dicks.
Hahaha Well put..
I miss Al...
Curious to see what you would say about my set up...
36"x20"x60"... cool tubed 600 HPS... kick ass vent sys... total control between 6F and 95F... with the light 10" from the tops...
That's 600 watts in a 5 square foot area... or 120 watts per sqft...
Or even ... @ 95,000 initial lumens, I have 19,000 initial lumens per square foot...
I do not know the rate of decline, but the bulb is 1 month old running 18/6... I'd love to hear NoDrama's conversion into "mean" lumens...
oh...
and back on topic, if I haven't suggested yet...
sorry... I would deff. go with 3 rows of 3x cooltubed 600s...
In my opinion, you will be able to bring them closer than the 1000s...
I think you would get more intensity, better distributed... producing that "sweet spot" over the whole grow area...
But what do I know... I can't even remeber if I suggested that to you or someone else... lol....