OK,well if you had enuogh co2 and nutes then that wouldn't be too much light.
But the heat would be a problem.
You will never match the intensity of the sun indoors.
There for never too much light.
Just a waist of light and electricity.
Jdog7000 Reviewed by Jdog7000 on . Too Much Light ? I have 16 plants on day 2 of 12/12. Tallest is 20in (sativa). Soon down to 4-6best girls. Can The plants get too much light. I have 3x6x6 closet grow. Starting to flower with 6x40watt = 240watt flo = 18000. Plan to add 6 more for total 36000 lumens. Can I flower the entire time with this setup. I know a drawbact to flo is effeciency.The new growth is light colored and exploding. I like the 9 sets of leaves on the new growth. ( pic1,2 -sativa pic3,4 -indica. The indica grew 6 in in 2 days Rating: 5