How many lumens per plant?

[Smoke4Life]

I am just now setting up my grow room and am going to go with T5's for my lights... The only question is how many lumens do I need per plant. The first light I got is a 4 foot 6 bulb T5 with 30,000 lumens so how many plants can I grow with that?

 

[Damagoman]

/Lumen_(unit)
If a light source emits one candela of luminous intensity uniformly across a solid angle of one steradian, its total luminous flux emitted into that angle is one lumen. Alternatively, an isotropic one-candela light source emits a total luminous flux of exactly 4π lumens. The lumen can be thought of casually as a measure of the total "amount" of visible light in some defined beam or angle, or emitted from some source. The number of candelas or lumens from a source also depends on its spectrum, via the nominal response of the human eye as represented in the luminosity function.

A standard 120 V, 100 watt incandescent light bulb emits 1500–1700 lumens, while a standard 230 V model emits 1200–1400 lm.[1] A 23 watt compact fluorescent lamp emits about 1500 lm.[2][3][4][5] The number of lumens produced per watt of power consumed is the wall-plug luminous efficacy of the source.

Lumens are more of a measure of light penetration/depth of useage light for our purposes?
The higher the lumens the better.

I figure watts per sq foot
55 for veg and 80+ for flowering, minimum.

 

[TorturedSoul]

Yeah, watts (or lumens) per square foot of the growroom. Kind of hard to tell how many per plant (we don't know how large you are going to grow it, or with which style lol).

What size is your grow room? Is everything covered in mylar or painted bright flat white?

 

[cannalearna]

If just left to do there thing , about 2 maybe 3 considering this is all you have for both veg and bud.