4x7.5x8 room, 1000w overkill?

[dumbkid]

Plan on growing in a 4ft deep, 7.5ft wide, 8ft tall closet... is 1000w HPS on a light rail/mover overkill? i can re-route the a/c ducting from my bathroom to the closet.

dumbkid Reviewed by dumbkid on 08-28-2006. 4x7.5x8 room, 1000w overkill? Plan on growing in a 4ft deep, 7.5ft wide, 8ft tall closet... is 1000w HPS on a light rail/mover overkill? i can re-route the a/c ducting from my bathroom to the closet. Rating: 5

[Organic Rasta]

Here ya go man....a few rules of thumb I use
This should help answert your questions.....
....also remember venting excessive heat and keeping the cab at an optimum temperature is key :thumbsup: :rasta: :thumbsup:


Lumens Per Square Foot

To determine how many lumens per square foot you have, find out the square footage of your space by multiplying the width and depth. Divide the lumens available by your square footage. This will give you lumens per square foot. For example, say your space is 3 feet deep by 4 feet wide, for a total of 12 square feet. The total lumens available from your light(s) is 45,000 lumens, which means you have 3,750 lumens per square foot.

How Much Light Do I Need?

Technology has advanced so much in the last 15 years that we are constantly refining the process and updating what we know works best for growing. Current theory holds that the minimum amount of lighting needed to sustain growth is around 2,000 lumens per square foot. Mid range is around 5,000 lumens per square foot. Optimal is 7,000 to 7,500 or higher lumens per square foot.

How Many Watts Do I Need?

The general rule of thumb for providing light for an area is a minimum of 30 W per square foot. 50 W per square foot is optimal. You can determine the proper lighting for your area by using this formula:

Watts x Square Feet

For example, say you have an area of 10 square feet and a 30 W. That would mean you have a 300 W per square feet minimum. Also, remember that fluorescent's are weaker and emit less light than an HID. This means you will need 5 times the amount of wattage to equal the output of an HID. So, 30 W of HID would equal 150 W of fluorescent's. This is why it is advised to provide a minimum of 30 W per square foot for HID lights and a minimum of 150 W per square foot for fluorescent's.

This is all important because the light intensity will directly affect the quality and yield of your crop. If you have less than optimal lighting your yield and potency will be reduced and buds will not develop as dense. This point can not be stressed enough. You must have the right amount of light for your space to grow high quality bud.

Can I Have Too Much Light?

The basic answer is no. According to the law of diminishing returns, you could theoretically reach a point when your plants just couldn't absorb any more light, but it would be impossible to have that many lights in your space. Heat from the lights would become a problem long before you ever reached that point. So use as many lights as you want, just control the heat.

Experimentation is the only sure method to determine the best solution for each plant. If plants are not receiving enough light, they begin to grow tall and spindly as if stretching for the light and foliage becomes pale green. Or, if they need to be moved closer to the light, or given a longer light exposure period. Too much light may lead to bleaching of leaves and flowers, browning and shriveling. Leaves would become overly compact and curl under at the edges.




Jah Bless

[Buffalo Bill]

IMHO, no......

[pmorris]

more light the better.. more penetration as long as you can cool/vent it efficiently you will be fine. I am running x2 1000watt on 5'1" x 6'10" area