i wouldent say ya can have too much light
lets put it this way , no matter how much light ya give ya plants there is no way ya can compare that to what the sun gives off if it was growing outside
so my answer is no ya cant give them too much light
just be carefull of the heat with multiple lamps
cheers all
busteruk7 Reviewed by busteruk7 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