Lighting has a bottom line , what goes in and what hits the plant. YES everyone would like to have a billion watts.
florsents 4 ft, full service shop light , with full service cool white or warm white.
If you look at a cpl you will see that only a little light comes directly down to the plants. while a FULL SERVICE MAG BALLAST, FULL SERVICE BULBS ABOUT 1/2 OF THE LIGHT LEAVES THE BULB directly. I did a test with some plants and got about 13 grams from 80 watts of florsents.
The bottom line in growing and blooming is .5 watts per gram month.
OR a 1000 watt bulb, in 2 months produces 1000 grams. I have a average of .468 gwm. Now scrogers get as much as .6 g/w/m , But I am lazy and thats to much work.
Some where thers a picture of bushes that are 32 in tall and 2 ft in dia . grown under 2 double full service ballast , full service bulbs ( NOTE NOT WATT SAVORS)
Things that make it work, everything, flat white, lots of air flow, good ferts (POT ferts !!!)
Use the cpf for the closet to keep the boogie man away.
SAFETY FIRST, Be happy and grow for fun