20K 400watt Metal Halide Bulb - XM

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20K 400watt Metal Halide Bulb - XM
Code: 20K-400XM
Price: $55.49

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The XM 10,000K is crisp white in color and is designed to simulate sunlight at shallow depths in the ocean. XM 10,000K lamps have the highest average par rating of any lamp on the market today.

The XM 15,000K is the result of extensive research and development. The 15,000K is designed to provide the correct spectrum of light without the use of actinic supplementation. This lamp alone creates a crisp blue color similar to medium depths on the coral reefs.

The XM 20,000K is the preferred lamp of many well known coral farmers and distributors. The 20,000K produces a deep blue appearance that brings out color like no other spectrum. This lamp creates a look similar to those found on deeper levels of the coral reefs

Spec XM Mogul Graphs:

10K 175W 10K 250W 10K 400W 15K 175W 15K 250W 15K 400W

20K 175W 20K 250W 20K 400W  

What type of ballast is recommended for XM lamps?
175W ANSI M57
250W ANSI M58
400W ANSI M59
Use of any other type of ballast may affect performance and life.

What is XM lamp life?
Lamp life varies depending on various operating conditions. Some key variables are lamp operating positions, duty cycle, line voltage regulation and ballasts operating characteristics.
Rated life is a statistical mean life. XM400W is rated 6,000 hours based on 10 hours on 1 hour off duty cycle. Shorter duty cycle will affect lamp life and performance.

Economic Life:
Economic life refers to the hours of operation during which a lamp is designed to provide optimum light output and color quality as well as lowest replacement cost. Economic life describes actual lamp life better than rated life because rated life does not account for the lumen depreciation and color shift that occur as lamps age. The economic life of lamps is generally 60% to 70% of the lamp rated life.

Rated Life:
Rated, or average (median), life for metal halide lamps is a value of lamp life expectancy based on laboratory and field tests of representative lamps, operating on approved ballasts, with a burn cycle of at least 10 hours per start. The average life is determined when 50% of traditional metal halide lamps initially installed are still operating.


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Premium Aquatics, Inc.
6050 E. Hanna, STE 4
Indianapolis, IN 46203
ph. 317-895-9005 fx. 317-895-9395