After thinking about it some...and running 6/750 gavitas myself...that Grow Beast fixture is much too close together for all 3 lamps and i know for a fact the sweet spot height for a 6/750 Gavita is at least 30 inches above canopy. 28 or 24 and it can be too much for canopy tops. Iam not sure but i dont think a 315 cmh has to be that far away (30") from canopy. I heard about 18 to 22 for cmh 315 watters was goldie locks zone. So that GB fixture would render the 315 cmh bulbs ineffective or half as much anyways in order to keep that center DE bulb from cooking tops. And with a 1000 watt DE ....forget it. Now with a light mover/rail system...whole different story.
Just a lot of configurations....
I posted this question on my thread, just to promote conversation and insight, into lights, using different ones together... So im gonna post it here, if anyone would like to chime in... I also realize we are talking about opinions here, so everybody keep an open mind for discussion...
JUST REMEMBER, THE AREA IS 4X8X6 GROW TENT! That is the area you have to work with...
I always come back to the issue of bulb life...
One thing is for sure I will agree with you on..
it is better to have multiple lights of a lesser wattage,
than 1 or 2 of high wattage...
We talked one time about gpw,
and gram per Sq foot...
We kinda just barely touched the surface...
So in this, im gonna guess we are more concerned on how much is achievable from a giving amount of space if all varibles are accounted for and tuned in... which in this case is 4x8x6
So the question,
What would yield more?
We are gonna do a little comparing.
We are gonna make all the variables the same
EXCEPT the light...
And for my reference we will use my setups configuration...
So 4x8x6 tent
c02 1200-1500
Ac controlled
rh controlled
We will assume your the grower, and you are using what ever growing technique you would use in this situation,
So here is our selections....
1. (2) hps 1000 (super horti bulbs)
2. (3) hps 600 (super horti bulbs)
3. (4) cmh 315 (Phillips bulbs)
5 . (2) cmh 630 and a 600 de (with the optional wide throw reflector)
6. (6) cmh 315's staggered = = = (Phillips bulbs)
Maybe there is even some more configurations im not thinking of..
I think it would be wise of me to note, and get your comment, as to
some of there are a overkill of light IF NOT for running c02, eh right?
I dont want to send nobody shopping for a light to big without understanding that..
I also know that there is a huge difference in upfront costs for these, which would play a factor in the decision a person would make. Some would also run cooler saving money on AC, but by how much is the question. AC is expensive.
So the question isnt which is the best choice upfront money wise, but yield, and yield only...
This is more along the lines of which would yield better because of light distribution, spectrum, and heat dissipation....
So if you were having a yield contest with your buddies but you got free pick of what lights to use, which do you think would be the top performer?
I also know I left out leds...
You can chime in on a setup of them too, if you think they could out perform the other light configurations...
Well i got to hit Mcds,, but i be back in an hr to follow up...