Indoor Yield-O-Rama

LogoAvailable Lumens*
(derived from the LPW table)

Bulb Type

Bulb Wattage

1500

1000

940

600

430

400

360

250

220

175

150

100

70

40


Standard High Intensity Discharge Bulbs

 

HPS & Agro

 

135,000

 

87,000

52,030

49,200

 

28,000

 

 

16,050

9,200

6,090

Metal Halide

154,500

120,000

 

 

 

38,400

 

21,000

 

14,525

 

8,100

4,970


Conversion High Intensity Discharge Bulbs

HPS for MH ballast

 

 

129,720

 

 

 

45,000

 

24,420

 

15,000

 

 

MH for HPS ballast

 

118,000

 

 

 

38,400

 

19,750

 

 

 

 

 


Fluorescent Bulbs

Standard

CW & WW

3,200

Specialty

Gro, Agro, Aquarium, Terrarium

1,800

 

Footnotes

 

 

(b)

 

 

 

(b)

 

(b)

 

(b)

 

 

(a)

* Values are Initial Lumen averages taken from several samplings of each bulb, actual values vary with manufacturer and time. Check current stats for several brands before deciding on a bulb. Mean Lumens for sampled bulbs are appx 10-15% lower than Initial Lumens for HPS and Fluoros, and appx 25-35% lower for MH.
(a) Lumens are for 40 watt flruorescent bulbs only (usually 4 feet, can include some compact versions)
(b) 940,360,220, and 150W HPS conversion bulbs for use with 1000,400,250,175 MH ballasts respectively.

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