I am afraid not, light waves cannot mix, they will travel alongside each other. When people refer to mixing the light spectrum they mean having blue and red running along side each other which is beneficial; Mostly blue light spectrum is needed in veg with a little red, then in flower change to...
18000 lumens from cfls? How many lamps is that at what output each...are they blue light spectrum?
I was putting my tomatoes outside in the day and at about 4 when the sun is losing its intensity bring them in under 5 20w cfls. Went out and bought a lamp for £25 its 64000k(white/blue spec) 125w...
Ive got 2 big devils growing them indoors to start under 24hr light (125w CFL, 6400k blue/white light spectrum kicking out about 8000 lumens)
also have in the same room 2 AK48, 1 Speed Devil, 2 Low Ryders and 4 Lowryder Purple Jems.......cant wait for harvest
Starting them all inside then...