2K somewhere less than 2ft
Ya Useful,Open but with a reflector.I might lower my lights a little this run I got coming up.Always worried about burning,though it has never happened.Got more strains this time then in resent years.[/quote]Thanks Fast...So you are goin naked with the bulbs??/
cravenmore said:I kiss bare bulbs homie!
Sooo what is your plan for the 1000??? We now have 15" in a 3x3 I really think this thread wlli end up bein very useful...Idiot out!
ok guys, I don't have time to crunch the numbers but it depends on your wattage and distance. Inverse square law in order to find your spread. For example, 1000 watt light at 1ft away is 1000w per ft. Now you take that same bulb, and move it 2ft away. Now you have 4 times the floor coverage, hence the inverse square law. Now you have 250w per sq ft. Now move that bulb 3 ft away and you get 16 sq ft. So 16sq ft divided into 1000w is about 62w per sq ft. I believe you want at least 30w per sq ft, and no more than 50 is needed indoors. I could be wrong about that last part. I know Jorge Cervantes and Ed Rosenthal explain this in detail in their books, I am going off memory.
Hey Anti, thanks for droppin by. I see you got your disco ball hung. I thought you were kiddin.My new adventure features two 400w CMH bulbs in a 2.5 ft x 6ft space, hung vertically with bare bulbs. Whole chamber (except floor) is lined with reflectix.
I currently have the bulbs hanging up high because the plants have only been out of the cloner and into the coco for 2-3 days. Soon I will begin to lower the bulbs to about plant height.
The furthest any plant in my setup will be from the light (and I'm talking about the backside of the plants in the corners) is 2 feet 7 inches.
My new adventure features two 400w CMH bulbs in a 2.5 ft x 6ft space, hung vertically with bare bulbs. Whole chamber (except floor) is lined with reflectix.
I currently have the bulbs hanging up high because the plants have only been out of the cloner and into the coco for 2-3 days. Soon I will begin to lower the bulbs to about plant height.
The furthest any plant in my setup will be from the light (and I'm talking about the backside of the plants in the corners) is 2 feet 7 inches.
50w per sq ft is the rule of thumb for how much light is needed for your grow space...
so if you use a 1000w light and want to hit 50w per sq ft you would like a space that is 20 sq ft.
the rule of thumb has nothing to do with how far the light is away.
but for the original question:
i use 1000 watters in silverstar hoods that are air cooled. i put them 12"-18" from the tops and try to form the canopy to the light.
Hey Anti, thanks for droppin by. I see you got your disco ball hung. I thought you were kiddin.
Disco ball ftw!!!
Lol, are you having disco parties in there too?