Lighting Led and Others Questions please help

Kquira;3047233 said:

How many watts of LED grow light (in its right spectrum for grow blue and red) meaning not a full spectrum LED light but the one specialized for MJ growing are needed per square feet? is just that most stuff i read it says it needs X amount of LED light per square feet but is not clear to me if they referring to regular (white-full spectrum LED) or grow LEDS.

Can i combine sunlight with artificial light at the same time, for example a greenhouse to veg 24/0 so if i had all the artificial light the plant(s) needed in a space where there's a fair amount of sunlight with the purpose of vegging, the lights so that when it turns to night the plants keep receiving the hours light needed in veg, will the going and coming of the sun light despite of the plants having enough artificial light affect them in a bad way? is it a waist to have lights on when sun light is hitting in i know its kinda dumb but i had to ask, will the artificial light be noticed by the plants if a fair amount of sun light is hitting them?

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