Question About Light Coverage?Good Question...... Honest Answer.
I dont know.
The best way to determine the efficiency of your lights is to use a light meter.
After you get your lights set up, check the grow room (under the lights) to see if you have a good equal distribution of light every where in the room with your set up.
We use 125w lighting in our green house. So I am not really familiar with the set up for the 200w CFLs.
With the 125w we have determined that if you have more than 10" of vertical space between the reflectors you begin to lose light quality around the edges. When the space reaches 18+" you begin to see noticeable differences in the growth of your plants.
Our flowering room (54 x 80) has 10 - 125w red spectrum CFLs hanging from the ceiling.
(They are set up so there is less than 9" between the reflectors)
This set up works great for flowering!
We have just recently added 12 - 26w Blue Spectrum (Natural Light bulbs) (4 down the middle of the room and 8 spaced out on the walls) to our flower room. We believe this will improve our flower cycle even more.
(We have not completed a full growth cycle under these lights yet, but it looks good so far!)
More Thoughts on Light Coverage
You requirements for lighting will be directly related to the number of plants you want grow in a given space! The more you try to grow the more light you will need.
