Mayo - I never tallied up the total lumen on my lighting set-up. I was told years ago to use 1 "warm" light and 1 "cool" light in each shop light fixture to emit the full spectrum of light needed for the seedlings to grow well. That is exactly what I did. This worked out very well for me. I did rotate the plants around every other day to make sure they were exposed to each spectrum. Something else that I did find to be very important ..... is how "close" the lights are to the plants. There was also a challenge of trying to get the light to "surround" the area of each plant. Using reflectors hanging off the light fixture does help with this. I never did try that though. But I did try to locate my young sprouting seedlings very close to the lights during germination and then was able to move the light a little further away as they grew. But it is still important to keep them close. My plants grew well during the Winter months and were ready to slowly be introduced to real sunlight in the Spring.