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Feature Article: Spectral Analysis of 175W Metal Halide Lamps - Part I

This set of articles will report on the results of spectral analysis and light output as measured using the same basic setup and distances used in all my prior tests, thus allowing for a direct comparison with previous data.
By Sanjay Joshi, Ph.D.
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Introduction

Over the last few years I have received several requests to test and report on the 175W Metal Halide lamps. These lamps are quite popular with aquarists and have been available in the hobby for a long time. More recently there has been a significant increase in the number of different lamps available - more different manufacturers and a wider range of color temperature ratings. This set of articles will report on the results of spectral analysis and light output as measured using the same basic setup and distances used in all my prior tests, thus allowing for a direct comparison with previous data (now available on the web at www.reeflightinginfo.arvixe.com).

Table 1: List of 175W lamps and ballast tests reported in this article

Lamps

Ballasts

USHIO 175W 10000K

Standard Magnetic (M57)

IceCap (Electronic)

ARO (Electronic)

EVC (Electronic)

USHIO 175w 20000K

Standard Magnetic (M57)

IceCap (Electronic)

ARO (Electronic)

EVC (Electronic)

EVC 175W 10000K

Standard Magnetic (M57)

IceCap (Electronic)

ARO (Electronic)

EVC (Electronic)

EVC 175W 14000K

Standard Magnetic (M57)

IceCap (Electronic)

ARO (Electronic)

EVC (Electronic)

XM 175W 10000K

Standard Magnetic (M57)

IceCap (Electronic)

ARO (Electronic)

EVC (Electronic)

XM 175W 20000K

Standard Magnetic (M57)

IceCap (Electronic)

ARO (Electronic)

EVC (Electronic)

PFO KRYSTAL STAR 175W 11000K

Standard Magnetic (M57)

IceCap (Electronic)

ARO (Electronic)

EVC (Electronic)

PFO KRYSTAL STAR 175W 11000K

Standard Magnetic (M57)

IceCap (Electronic)

ARO (Electronic)

EVC (Electronic)

HELIOS 175W 12500K

Standard Magnetic (M57)

IceCap (Electronic)

ARO (Electronic)

EVC (Electronic)

HELIOS 175W 20000K

Standard Magnetic (M57)

IceCap (Electronic)

ARO (Electronic)

EVC (Electronic)

1) USHIO 175W 10000K

Table 2: USHIO 175W 10000K performance on all ballasts

Ballast

Power

Watts

 Input Volts Input Amps PPFD CCT

Efficiency

PPFD/Watt
ARO (Electronic) 180 122.1 1.65 66 8256 0.3667
Icecap (Electronic) 179 122.4 1.62 63.3 8595 0.3536
EVC (Electronic) 182 122.4 1.58 75.5 8136 0.4148
Magnetic (M57) 200 120.3 2 75.7 8892 0.3785

Figure 1: Spectral data for USHIO 175W Lamps on all ballasts

Graph

2) USHIO 175W 20000K Mogul Base

Table 3: USHIO 175W 20000K Mogul Base performance on all ballasts

Ballast

Power

Watts

 Input Volts Input Amps PPFD CCT

Efficiency

PPFD/Watt
ARO (Electronic) 180 123.6 1.62 37.3 0 0.2072
Icecap (Electronic) 179 123.3 1.61 35.7 0 0.1994
EVC (Electronic) 182 122.4 1.6 35.9 0 0.1973
Magnetic (M57) 201 122.8 2.04 37.4 0 0.1861

Figure 2: Spectral data for USHIO 175W 20000K Mogul Base Lamps on all ballasts

Graph

3) EVC 175W 10000K Mogul base

Table 4: EVC 175W 10000K Mogul base Lamps performance on all ballasts

Ballast

Power

Watts

 Input Volts Input Amps PPFD CCT

Efficiency

PPFD/Watt
ARO (Electronic) 180 123.5 1.57 58.8 9976 0.3267
Icecap (Electronic) 179 122.5 1.92 45.7 10699 0.2553
EVC (Electronic) 182 122.6 1.63 57.7 9800 0.3170
Magnetic (M57) 178 123.7 1.61 57.6 6172 0.3236

Figure 3: Spectral data for EVC 175W 10000K Mogul base Lamps on all ballasts

Graph

4) EVC 175W 14000K Mogul base

Table 5: EVC 175W 14000K Mogul base performance on all ballasts

Ballast

Power

Watts

 Input Volts Input Amps PPFD CCT

Efficiency

PPFD/Watt
ARO (Electronic) 179 122.6 1.63 57.7 0 0.3223
Icecap (Electronic) 178 123.7 1.61 57.6 0 0.3236
EVC (Electronic) 181 123.5 1.57 58.8 0 0.3249
Magnetic (M57) 176 122.5 1.92 45.7 0 0.2597

Figure 4: Spectral data for EVC 175W 14000K Mogul base Lamps on all ballasts

Graph

5) XM 175W 10000K Mogul Base

Table 6: XM 175W 10000K Mogul Base performance on all ballasts

Ballast

Power

Watts

 Input Volts Input Amps PPFD CCT

Efficiency

PPFD/Watt
ARO (Electronic) 179 124.1 1.62 69.2 11342 0.3866
Icecap (Electronic) 179 122.7 1.62 70.13 11047 0.3918
EVC (Electronic) 181 124.2 1.57 72.58 11043 0.4010
Magnetic (M57) 198 123.5 1.99 62.09 10179 0.3136

Figure 5: Spectral data for XM 175W 10000K Mogul base Lamps on all ballasts

Graph

6) XM 175W 20000K Mogul Base

Table 7: XM 175W 20000K Mogul Base performance on all ballasts

Ballast

Power

Watts

 Input Volts Input Amps PPFD CCT

Efficiency

PPFD/Watt
ARO (Electronic) 179 123.1 1.62 37.2 0 0.2078
Icecap (Electronic) 178 123.2 1.61 35.3 0 0.1983
EVC (Electronic) 182 123 1.57 44.9 0 0.2467
Magnetic (M57) 211 121.1 2.04 51.1 0 0.2422

Figure 6: Spectral data for XM 175W 20000K Mogul base Lamps on all ballasts

Graph

7) HELIOS 175W 12500K Mogul Base

Table 8: HELIOS 175W 12500K Mogul Base performance on all ballasts

Ballast

Power

Watts

 Input Volts Input Amps PPFD CCT

Efficiency

PPFD/Watt
ARO (Electronic) 179 123.2 1.62 68.6 8435 0.3832
Icecap (Electronic) 179 122.5 1.62 68.1 8414 0.3804
EVC (Electronic) 182 122.2 1.59 70.8 8309 0.3890
Magnetic (M57) 166 122.2 1.88 37.2 6017 0.2241

Figure 7: Spectral data for HELIOS 175W 12500K Mogul base Lamps on all ballasts

Graph

8) HELIOS 175W 20000K Mogul Base

Table 9: HELIOS 175W 20000K Mogul Base performance on all ballasts

Ballast

Power

Watts

 Input Volts Input Amps PPFD CCT

Efficiency

PPFD/Watt
ARO (Electronic) 178 122 1.64 41.7 0 0.2343
Icecap (Electronic) 176 122 1.63 46.87 0 0.2663
EVC (Electronic) 182 123.4 1.58 47.06 0 0.2586
Magnetic (M57) 173 123.6 1.94 28.03 0 0.1620

Figure 8: Spectral data for HELIOS 175W 20000K Mogul base Lamps on all ballasts

Graph

9) PFO KRYSTAL STAR 175W 11000K Mogul Base

Table10: PFO KRYSTAL STAR 175W 11000K Mogul Base performance on all ballasts

Ballast

Power

Watts

 Input Volts Input Amps PPFD CCT

Efficiency

PPFD/Watt
ARO (Electronic) 181 121.3 1.66 57.2 9296 0.3160
Icecap (Electronic) 179 121.3 1.65 59.3 10046 0.3313
EVC (Electronic) 182 121.3 1.61 62.17 10579 0.3416
Magnetic (M57) 198 122 2.02 56 8501 0.2828

Figure 9: Spectral data for PFO KRYSTAL STAR 175W 11000K Mogul base Lamps on all ballasts

Graph

10) PFO KRYSTAL STAR 175W 18000K Mogul Base

Table 11: PFO KRYSTAL STAR 175W 18000K Mogul Base performance on all ballasts

Ballast

Power

Watts

 Input Volts Input Amps PPFD CCT

Efficiency

PPFD/Watt
Icecap (Electronic) 179 121.4 1.65 38.7 0 0.2162
EVC (Electronic) 182 122.9 1.59 40.1 0 0.2203
Magnetic (M57) 168 122.1 1.95 22.32 0 0.1329

Figure 10: Spectral data for PFO KRYSTAL STAR 175W 18000K Mogul base Lamps on all ballasts

Graph

References:

  1. www.reeflightinginfo.arvixe.com
Created by liquid
Contributors : Sanjay Joshi, Ph.D.
Pomacanthus Publications, LLC
Last modified 2006-01-01 19:22





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