Optimum, he can actually flower with probably only 2 total lights but there will be maybe a couple grams there in the end. And yes the 5000 lumens is per sq ft, not plant. The reason I said 4 per plant is so that one can be on each of four sides near the top, providing light all around. If you use LST, SOG, or ScrOG, you can get away with the current configuration seeing as you will have an even canopy and only need overhead lighting. I have 1 plant right now that's 2" under a 200w cfl (12,000 lumens) & has been LST'd to keep it in a 10"x10" area and that's not even proving to be completely optimum IMHO, although it's still doing great. The more light, the better generally. You can get a few of the y-splitters and run 2 bulbs from each socket as long as you don't exceed the wattage rating of the fixture.
redtails Reviewed by redtails on . 1st grow advice is appreciated... Ok so this is sort of my first grow but i have attempted to do this before just never worked out very well. So to start this off here are the materials that i am using. 4-26w bulbs of 1600 lumens of light output, so a total of 6400 lumens 18 gallon bin emergency blanket all on the inside of the bin bathroom fixture with 4 sockets 8 biodegradable pots Miracle Grow organic choice Rating: 5