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

1) USHIO 175W 10000K

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

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

2) USHIO 175W 20000K Mogul Base

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

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

3) EVC 175W 10000K Mogul base

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

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

4) EVC 175W 14000K Mogul base

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

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

5) XM 175W 10000K Mogul Base

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

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

6) XM 175W 20000K Mogul Base

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

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

7) HELIOS 175W 12500K Mogul Base

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

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

8) HELIOS 175W 20000K Mogul Base

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

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

9) PFO KRYSTAL STAR 175W 11000K Mogul Base

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

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

10) PFO KRYSTAL STAR 175W 18000K Mogul Base

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

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

References:

1. www.reeflightinginfo.arvixe.com