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HID Replacement Bulb Specs
Grow Guide: HID Replacement Bulb Specs Category: Lighting & Reflectivity
Author: Silent Post Date: 05-13-2006
Rating: 4.40/5 (5 votes) Views: 3666
This is info ive gained over the years of growing. u may agree or disagree but this is my opinon

What with classes letting out and outdoor grow season here in my neck of the woods kicking off, I am sure there are going to be many new members/guests showing up with that question on their minds.
Outdoor the answer is a bit simplier. Plenty of sun.

For indoor growers, we first must recognize the three basic types of lighting you can use.
#1. Fluorescents.
#2. High Intensity Discharge (HID) lamps.
#3. Sunlight.
If you do not have one of these 3 to utilize, please read the lighting section of the grow guide , and Why incandescent lights suck . You can catch up to us when you have access to one of the big three.

Sunlight I won't even get into because unless you have a Southern facing room (again, for my neck of the woods) with the South wall filled with windows that noone can see into and you can convert to a grow room...Or...You have a loft with glass ceiling panels, imho, 99.9% of the time you just can't do it.
Greenhouses are a type of indoor growing though. Just not in my field of experience.

Fluorescents are the picked on light of this generation.
I have been fortunate enough to live through 4 decades and back in the 70's these lights were the top dog.
4 foot shop lights, cool white bulbs. As many as you could fit. Stealth wasn't quite as possible by today's standards.

Nowadays, you have a wide range of spectrum to choose from. So you can better match your tubes to the type of growth.
4 foot ballasts and tubes are really cheap, there are now compact fluoro's that are more expensive. With these you have more lumens in a smaller space, which is always a good thing.
Envirolites and Lights of America are two of the more popular compact fluorescents.

If your grow requirements dictate you use fluorescents I can respect your right to make that decision.
If you believe your wallet dictates you use fluorescents, in my opinion you will find yourself spending the same amount of money upgrading your fluorescent grow over the long run as you would getting a small/medium HID light.
here is a good data source for fluorescent watts/lumens/kelvin temperature.

For those of you who feel put down for using your fluorescents, hold your head high. Many good grows have been the result of fluo's and you are continuing a tradition that has spanned decades.
One light at the end of the tunnel. Something somewhere (new age led's, solar cells, etc...), will be the "new breakthrough technology" and kick the HID growers out of the top spot someday.

High Intensity Discharge lights come in three flavors.
Mercury Vapor (MV): From my experience, better than everyday fluorescents (cool white, warm white). Spectrum isn't the greatest to say the least. Better for vegging than flowering by a long shot. Heat is a problem and they are inefficient as all get out.

Metal Halide (MH): Next light up in the HID chain. Good vegetative light. Falls short for flowering. vs HPS of same watts

High Pressure Sodium (HPS): Top dog at the moment. Great for flowering and many growers are discovering they can be used for entire grows, eliminating the need for other lights.
Here is a great thread with the debate and here is a good thread comparing MH and HPS.
Conversion bulbs are available so you can switch from HPS to MH or vice-verse as well as "expanded spectrum" bulbs that will give you a wider spectrum HPS or MH.

Here is another source besides Lamp Lumen Data to get data on HID lights.

Now we have covered what lights to get, we can get to "do I have enough light?".

To determine how many lumens per square foot you have: Find out the square footage of your space. Width x Depth = Square feet. Divide the lumens available by your square footage. This will give you lumens per square foot. Example: Say your space is 3 feet deep by 4 feet wide, 12 square feet. The total lumens available from your light(s) is 45000 lumens. 45000/12 = 3750 lumens per square foot.

Now for the big question. 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 2000 lumens per square foot. Mid range is around 5000 lumens per square foot. Optimal is 7000-7500, or higher, lumens per square foot.

What if you want to determine how much light you need in watts? The general rule of thumb for providing light for an area is a minimum of 30 watts per square foot. 50 watts per square foot is optimal. You can determine the proper lighting for your area by using this formula: 30 watts (or 50) x ?(your) square feet. Example: You have an area of 10 sq. ft. - 30w x 10 s.f. = 300watts/sq.ft minimum or 50 watts x 10 s.f. = 500 watts/sq. ft. (optimal). 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 watts of HID would equal 150 watts of fluorescent's. This is why it is advised to provide a minimum of 30 watts per square foot for HID lights and a minimum of 150 watts per square foot for fluorescent's
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HID Light Bulb Chart/Specs and Lighting Info below

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HID:is the group or class MH HPS are considered Mercury Vapor is also a HID but WORTHLESS for what we are after (NOOB NOTE)

NOTE: THESE HID LAMP/BULB SPECS ARE FROM HYDROFARMS catalog/Grow Guide:

* I DONT CARE BOUT RATED HOURS OF LIFE I CHANGE BULBS EVERY 6Months to a yr *

(k) = 1000 for those of u who dont know

And all bulbs Labeled w/EYE are made by Hortilux

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Reflector size taken on these specs are 8 1/2(H) X 19 5/8(W) x 20 1/4(L) inch's

250w lamp can cover 5ft area 4100 lumens a per square foot

400w lmap can cover 12ft area 4166 lumens a per square foot

1000w lamp can cover 33ft area 4545 lumens a per square foot

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Hortilux Sodium Bulbs:

400w EYE bulb = 55k lumens rated hours of life 24k hours
430w EYE bulb = 55k lumens rated hours of life 16k hours
600w EYE bulb = 85k lumens rated hours of life 18k hours
1000w EYE bulb = 145k lumens rated hours of life 24k hours

Conversion Bulbs HPSodium to MHalide:

250w MH conv. bulb = 21k lumens rated hours of life 10k hours
400w MH conv. bulb = 40k lumens rated hours of life 20k hours
1000w MH conv. bulb = 118k lumens rated hours of life 12k hours

Conversion MHalide to HPSodium:

150w HPS conv. EYE bulb = 15k lumens rated hours of life 24k hours
220w HPS conv. EYE bulb = 25k lumens rated hours of life 24k hours
360w HPS conv. EYE bulb = 45k lumens rated hours of life 24k hours
940w HPS conv. EYE bulb = 130k lumens rated hours of life 24k hours

Metal Halide Bulbs:

175w Universal bulb = 13k lumens rated hours of life 10k hours
175w Horiz. (High Output) bulb = 15k lumens rated hours of life 10k hours
175w Daylight Universal 5500 kelvin =12k lumens rated hours of life 7k hours

250w Horiz. (High Output) bulb = 23k lumens rated hours of life 10k hours
250w Universal bulb = 21k lumens rated hours of life 10k hours
250w Daylight (5500 kelvin) bulb = 19k lumens rated hours of life 7k hours
250w Daylight (6500 kelvin) EYE bulb = 18k lumens rated hours of life 9k hours

400w Daylight (5500 kelvin) bulb = 33k lumens rated hours of life 15k hours
400w Daylight (6500 kelvin) EYE bulb = 30k lumens rated hours of life 9k hours
400w Universal bulb = 36k lumens rated hours of life 20k hours
400w Vertical High Output bulb = 40k lumens rated hours of life 20k hours
400w Horizonal High Output bulb = 40k lumens rated hours of life 20k hours
400w Horizonal High Output EYE bulb = 40k lumens rated hours of life 20k hours

1000w Universal bulb = 110k lumens rated hours of life 12k hours
1000w Universal EYE bulb = 115k lumens rated hours of life 12k hours
1000w Universal 5600 kelvin bulb = 110k lumens rated hours of life 12k hours
1000w Universal 5600 kelvin EYE bulb = 115k lumens rated hours of life 12k hours
1000w High Output Vertical bulb = 115k lumens rated hours of life 12k hours
1000w High Output Vertical EYE bulb = 115k lumens rated hours of life 12k hours
1000w Daylight 5500 Kelvin bulb = 80k lumens rated hours of life 9k hours
1000w Horizonal High Output bulb = 115 lumens rated hours of life 12 hours
1000w Horzontal High Output 5600 Kelvin bulb = 115k lumens rated hours of life 12k hours
1000w Standard bulb = 133k lumens rated hours of life 9k hours

High Pressure Sodium:

150w HPS bulb = 16k lumens rated hours of life 24k hours
250w HPS bulb = 28.5k lumens rated hours of life 24k hours
400w HPS bulb = 50k lumens rated hours of life 24k hours
600w HPS bulb = 90k lumens rated hours of life 18k hours
1000w HPS bulb = 140k lumens rated hours of life 24k hours

Super Agro Sun HPS bulbs:

160w HPS bulb = 17k lumens rated hours of life 16k hours
270w HPS bulb = 29k lumens rated hours of life 16k hours
430w HPS(Son Agro)bulb = 53k lumens rated hours of life 16k hours

Agro Sun Gold Metal Halide bulbs:

1000w bulb = 118k lumens rated hours of life 12k hours
400w bulb = 40k lumens rated hours of life 20k hours
250w bulb = 20k lumens rated hours of life 10k hours

Agrosun Red High Pressure Sodium bulbs:

430w bulb 58k lumens rated hours of life 15k hours
600w bulb 90k lumens rated hours of life 10k hours


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