Dsuny Lights...not all that !

[Hot2na]

Just rec'd and hooked up Dsuny shannon 40 for use over my anemone observation tank...First impression is that they are NOT that bright even at 100% setting on all channels..the $60 cheapo light I got on amazon out does these dsuny's any day ...
I see vids on u tube of the dsuny's having real good par numbers ...I don't see how... I have to supplement these with other lighting already..
I guess -what can u expect for $117 bucks ?
anyone have something good to say about these lights ?

 

[alain Bouchard]

have you tested with par meter, or is it just your impression? a light that use more white than blue might looks brighter, but they are not the correct spectrum for corals.

 

[Reefing Madness]

Welp, these are only $80 and I've been using them for years now.

 

[FBAA]

I use the Turing 30 over one of my tanks. After looking at the board they are current limiting the output of the lights to half of the LED capacity. The spectrum is ok at best. I remove all the LED's and resolder my own LED spectrum back on. It works much better for corals. They are inexpensive but the PCB's and controller work quite well.

 

[FBAA]

Welp, these are only $80 and I've been using them for years now.

I use the plant growth version over my refugium. Inexpensive but work just fine.

 

[oreo54]

Just rec'd and hooked up Dsuny shannon 40 for use over my anemone observation tank...First impression is that they are NOT that bright even at 100% setting on all channels..the $60 cheapo light I got on amazon out does these dsuny's any day ...
I see vids on u tube of the dsuny's having real good par numbers ...I don't see how... I have to supplement these with other lighting already..
I guess -what can u expect for $117 bucks ?
anyone have something good to say about these lights ?

Max Power: 100W (Save more 15%) -Luminum: 4200lm -PAR: 600PAR -LEDs Angle: 120°

So wattage is slightly less than a black box.
Beam angle is 120 (more dispersion) bb's is 90

More blue wattage.

 

[FBAA]

Here is the Turing 30 wavelength layout. As you can see they use a lot of 470nm which IMHO misses the mark especially for fluorescence in corals. That peak is at or about 450nm.

 

[alain Bouchard]

depends on what is your plan; fluorescence or growth, they are not optimal at the same wavelength

 

[FBAA]

depends on what is your plan; fluorescence or growth, they are not optimal at the same wavelength

Very true, however the fluorescence wavelength at 450 is also in the photo-active area for photoreceptors. The below graph also includes bacteriochlorophylls.