Scarfinger68
Member
I have been reading up on what amount of light is needed and I could be way off but this is what I am going with in regards to flowering.
I have read 10,000 lumen are recommended. I believe this is per sq. foot. So, Lux = Lumen/meters squared. Foot to meters is 12inches / 36inches = 0.33 meters; sq. meters = 0.33m x 0.33m = 0.11 sq. meters. So, 10,000 lumen / 0.11 meters sq. = 90,909 Lux.
From what I have read just from searching around, 90,909 Lux may be on the high side of required light to flower. This amount is roughly the same amount from the sun on the earth at noon and may slow grow? I think it has something to do with heat stress??
I also have read the 25,000 to 50,000 lux is good for growth.
I was planning on 8 CFL at 42 watts each 2700k, 2600 Lumens each in an area of width 0.66m x depth 0.66m x height 1m for flowering.
8 cfl x 2600 lumens = 20,800 lumens.
Lux = 20,800 lumens / ( 0.66m x 0.66m) = 20,800 lumens / .44 meter sq. = 47,272 Lux
I am not really sure how distance from the CFL's come to play in the calculations. I am assuming this will be with the plant being 4 inches from the cfl.
I am guessing that the farther away from the CFL's, a proportionate decrease in LUX will occur. But I really have no idea.
As you can tell I am fumbling through all this in hopes of my first grow.
Am I at least in the ballpark?
Thanks
I have read 10,000 lumen are recommended. I believe this is per sq. foot. So, Lux = Lumen/meters squared. Foot to meters is 12inches / 36inches = 0.33 meters; sq. meters = 0.33m x 0.33m = 0.11 sq. meters. So, 10,000 lumen / 0.11 meters sq. = 90,909 Lux.
From what I have read just from searching around, 90,909 Lux may be on the high side of required light to flower. This amount is roughly the same amount from the sun on the earth at noon and may slow grow? I think it has something to do with heat stress??
I also have read the 25,000 to 50,000 lux is good for growth.
I was planning on 8 CFL at 42 watts each 2700k, 2600 Lumens each in an area of width 0.66m x depth 0.66m x height 1m for flowering.
8 cfl x 2600 lumens = 20,800 lumens.
Lux = 20,800 lumens / ( 0.66m x 0.66m) = 20,800 lumens / .44 meter sq. = 47,272 Lux
I am not really sure how distance from the CFL's come to play in the calculations. I am assuming this will be with the plant being 4 inches from the cfl.
I am guessing that the farther away from the CFL's, a proportionate decrease in LUX will occur. But I really have no idea.
As you can tell I am fumbling through all this in hopes of my first grow.
Am I at least in the ballpark?
Thanks