It seems that most of the info on how many lumens are needed pertain primarily to flowering. I guess I actually have two questions.

How many lumens per square foot are needed for vegging?

and

How many lumens per square foot are needed to maintain healthy mother plants?

I have a 250 watt MH lamp but heat is an issue in my grow room. I'd like to run flouros instead. I'm currently using 4 foot T-12's for my seedlings and could easily add more for vegging and or moms. The only figures I could find for the T-12's said they are 3050 lumens each. That figure seems too high to me. I wouldn't mind switching to T-5's, if needed, to get enough lumens for the job. The area is roughly 4' x 2' or 8 square feet. I have used CFL's in prior grows but, surprizingly, they generate quite a bit of heat.

Thanks,

McT
McToker Reviewed by McToker on . How much light for Vegging and Mothers? It seems that most of the info on how many lumens are needed pertain primarily to flowering. I guess I actually have two questions. How many lumens per square foot are needed for vegging? and How many lumens per square foot are needed to maintain healthy mother plants? I have a 250 watt MH lamp but heat is an issue in my grow room. I'd like to run flouros instead. I'm currently using 4 foot T-12's for my seedlings and could easily add more for vegging and or moms. The only Rating: 5