Since the previous reports on
some Coralvue lamps [1], I have received a new set of Coralvue lamps 400W
10000K, 14000K, and 20000K lamps. 
Additionally Coralvue is introducing a new set of lamps labeled Reeflux
10000K, the 250W and 400W mogul version of this lamp are also included in this article.  The lamps are also tested with a new ballast
– the Coralvue 400W electronic ballast.

These 5 new lamps were evaluated with
differnt ballasts used to drive these lamps. The lamps are listed in Table
1.  As usual these lamps were tested
using the identical setup to all my previous tests, thus allowing for direct
comparison between the lamps. 

Table 1: List of  Single Ended 
Mogul lamps and ballasts tests reported in this article

Coralvue 10000K

Table 1: Coralvue 10000K performance on all ballasts

Figure 1: Coralvue 10000K Lamps on all ballasts

Coralvue 14000K

Table 2: Coralvue 14000K performance on all ballasts

Figure 2: Coralvue 14000K Lamps on all ballasts

Coralvue 20000K

Table 3: Coralvue 20000K performance on all ballasts

Figure 3: Coralvue 20000K Lamps on all ballasts

Coralvue Reeflux 400W 10000K

Table 4: Coralvue Reeflux 400W 10000K performance on all ballasts

Figure 4: Coralvue Reeflux 400W 10000K Lamps on all ballasts

Coralvue Reeflux 250W  10000K

Table 5: Coralvue Reeflux 250W 
10000K performance on all ballasts

Figure 5: Coralvue Reeflux 250W 
10000K Lamps on all ballasts

Discussion and Summary

The Coralvue 400W mogul 10000K, 14000K and 20000K all have a
very similar spectral plot with the typical large peak at 452 nm. One would
expect them to have different spectral shapes but as seen from the data this is
not so.  In fact, the lamp with the most
PAR in this category of lamps is the 20000K lamp.  Figure 6, shows a comparison of these 3 lamps when running on the
same ballast (the PFO-HQI ballast).

Figure 6: Spectral
Plots of the Coralvue 400W mogul 10000K, 14000K, and 20000K on the PFO-HQI ballast.

The Coralvue Reeflux 10000K is a rather interesting lamp,
which should have a more appealing look given that it has the large spike at
452 nm which is typical of the “20000K” lamps but has additional peaks at 534,
588 and 670 nm which should help in “whitening” the appearance of the lamp.  The 250W lamp had a correlated color
temperature ranging from 10093K- 17060K depending on the ballast used.  The 400W lamp has a very similar spectral
profile but with different spectral irradiance the software was unable to
compute the CCT for this lamp.  Figure 7
shows the spectral plots of these 2 lamps on “HQI” ballasts.

Figure 7: Spectral
Plots of the Reeflux 400W and 250W  mogul 10000K on the corresponding “HQI” ballasts

Acknowledgements

I would like to thank several people whose help
made this study possible. They were kind enough to provide us with lamps and
ballasts for testing: David from Coralvue, Patrick at PFO Lighting, Andy at
IceCap Inc, Perry at Sunlight Supply, Vince at Ocean Encounters, and Champion
Lighting, Reef Fanatics.  Finally, I
would like to thank Dr. Paul Walker of Penn State University for the use of the
spectroradiometer.

References

[1] www.reeflightinginfo.arvixe.com