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lumens per square foot

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1000w HPS in 3x3 tent
... CO2. The plants won't be able to use all of the light. That will give you about 16,000 lumens per square foot! There's no need to go over 6,000 without CO2 injection. Quote: Originally Posted by smoketoker 1000 watt seems ... CO2. The plants won't be able to use all of the light. That will give you about 16,000 lumens per square foot! There's no need to go over 6,000 without CO2 injection. Well dude, I have a 400w cooltube and ...
http://forum.grasscity.com/lighting/911975-1000w-hps-3x3-tent-3.html
1st grow - Rubbermaid CFL, HELP NEEDED
... foot plant so I would start trying to sex after about 20 days by using 2700k's at 12/12 lighting. Quote: Originally Posted by gottalovebudda 4 cfls for 8 plants? You need 5,000 lumens per ... lights for flowering? I definitely agree about the square pots. They can be a little harder to ...
http://forum.grasscity.com/micro-grows/613058-1st-grow-rubbermaid-cfl-help-needed-2.html
My first grow, rubbermaid grow box. please critique/help!!!!
... .80555 square feet. each of the 4 lights give off 800 lumens. So 3200 total lumens.. 3200L/1.80555sq.ft.= 1772.3 Lumens per sq. foot. About 800-1300 lumens short. Now, from my understanding (again could be extremely wrong), this means that it's 1772.3 lumens per square foot if your lights are 1 foot above the ...
http://forum.grasscity.com/micro-grows/686060-my-first-grow-rubbermaid-grow-box-please-critique-help.html
Closet VS Grow Tent
... 36,000 lumens and a 400w HPS has 50,000 lumens... With that said you have 10.89 square feet in that tent so.. 400w MH = 3,305 lumens per square foot and 400w HPS = 4591 lumens per square foot. I'd say you could do a 1 plant per square foot Sea of ...
http://forum.grasscity.com/micro-grows/865543-closet-vs-grow-tent.html
Looking for Critique of Closet Grow Setup
... TIGHT- two 5 gallon buckets right up on each other, although I will probably improve this by getting 4 gallon square buckets. In terms of floor space inside the flowering chamber, I donít need much- just air intake- I can keep ... of a difference (in terms of yield)? Heat is a concern, for certain. Going by the standard of 2500-5000 lumens per square foot, theoretically I'd have nearly 6000/sq.ft with the little 150 watt. But you really advise the 250? Also ...
http://forum.grasscity.com/micro-grows/899833-looking-critique-closet-grow-setup.html
Winter Garden 08
... magnification I wish I had your winter weather. 4 27W daylight CFLs and 2 23W Warm White CFLs...about 3300 lumen per square foot. I used to use...and still do use ponytail rubbers and straightened paper clips bent into hooks. The satellite installer ...
http://forum.grasscity.com/outdoor-marijuana-growing/291960-winter-garden-08-a.html
The Scrog Method
... site Yield o rama it has an excellent yield calculator for figuring out how much you can get based on lumens per/square foot and so on and exact space you will need for your canopy then you just have to balance the light ... meter to get the max penetration of the sub canopy and you will have a nice grow in a 20 square foot space you can yield around 9.00 grams with 2 weeks veg 8 -9 weeks flower depending on your strain ...
http://forum.grasscity.com/plant-training/48363-scrog-method-10.html
My quick dumb lighting question
... lumen loss on the ends of his grow area, but he just has to throw a cfl on the ends and problem fixed. alot cheaper than buying a 600 watt HPS system. if he follows this setup it will yield 956 lumens per square foot ...
http://forum.grasscity.com/absolute-beginners/129392-my-quick-dumb-lighting-question.html
Quick CFL Question
... both seedlings btw. What i want to know is how many actual watts i have and how many lumen are reaching my plant tops per foot and a half of height i raise the lights. Keep in mind that my plants will also ... seems too big for the amount of lumens you have. You need about 3000 lumens per cubic foot, you have almost 4 square feet...so for each foot of height you have 4 cubic feet. You only have 5600 lumens... you need a lot more for that ...
http://forum.grasscity.com/absolute-beginners/474825-quick-cfl-question.html
Help beginner with indoor hydroponics!
... general rule you need to keep you lumens over 2,000 and up to 10,000 to all parts of the plant. By following the guidelines of 100w per plant, 40w per sqft, and 5,000 lumens per square foot you can pretty much fulfill your light needs without having to do any complicated math. For you I suggest CFL bulbs. The highest wattages you can find!!! Nothing under 20 watts will be very useful. 1 bulb per seedling ...
http://forum.grasscity.com/absolute-beginners/492221-help-beginner-indoor-hydroponics.html

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