Par readings on our Coral Maxx LEDs

Actually, the fixture spectrograph (not the emitter spectrograph) is a vastly superior means of comparison, because a glance at the spectrograph gives you much info about the PUR and CRI.

Problem is, most manufacturer's won't provide it, or can't afford to provide it. Those are the ones you should avoid.

 

haha cant argue with this dude, he knows what hes talking about.. lol, if par has nothing to do with how well the light actually will grow coral how is it a good way to compare led's the panfish? just doesn tmake sense to me

 

Well, all I'm saying is, yes PUR is a great thing to tout, but as Orphek said, some can't do it. It would be nice to have each manufacturer give PAR values to be able to compare between fixtures. This is what I mean. At the current moment there is no other likely alternative for this.

 

Please only state why your product is excellent~Curt.

The problem with PAR measurements, even between fixtures made by the same company, is that each fixture may or may not drive the emitter in the same way. This means the exact same emitter could change in not only PAR but spectrum (so PUR, CRI, and efficiency as well) in a different fixture, or if a different driver is used, or PCB, etc.

Is a PAR measurement better than nothing? Absolutely. But you definitely need at least an emitter spectrograph for a PAR value to mean anything in the real world, if that makes sense. Panfish does have a valid point, and that point is our hobby's lighting (and our hobby) is hardly scientific, and until recently PAR values weren't even available.

In this case, the fixture being measured emits more PAR than does the halide, but I would not replace halides for it, as I am familiar with the spectral curve of the fixture.

 

we have had the spectrographs for a while now but, people have been asking for the PAR readings in an actual tank and this is why we made this thread.

White Spectrograph:


UV Spectrograph:


Red Spectrograph:


Blue Spectrograph:

 

It may be more appropriate to make your own thread on PUR and CRI in the lighting forum instead of a sponsor's forum. I'm sure the reefing community would love to discuss more about PUR and CRI.

 

PAR is the best measurement we have. Do not be fooled by this jargon! The Apogee PAR meter is only about 10% low when measuring light that is heavy in the blue spectrum (this includes all forms of light not just LED). How many times have we asked for the spectrum that they define as PUR? Have we gotten an answer? Nope!

PUR means absolutely nothing so long as the coral is getting sufficient levels of light for photosynthesis. If we were dealing with low output lighting, sure PUR would matter but when we are dealing with reef lighting, this factor is worthless. The Coral Maxx LED is absolutely providing enough light for photosynthesis. If you like the way it looks and you are happy with it, you will be fine. Whether they produce a spectrograph or not! Tons of people are happy with similar LED fixtures from other companies.

 

FYI gcarroll, spectrographs were provided a post up.

 

I agree PAR is important, ehether LED or MH.

 

+1 I agree