I'm not sure if anyone has done any research on the Dsuny LED fixtures but I've been using them for almost a year and with great success.
I have 4 of them over my 120 Tall Marineland.
Here are the settings and PAR results:
Channel 1: Whites Back
Channel 2: Actinics
Channel 3: Blues + Red
Channel 4: Whites Front
Light mounting height (distance from light panel to water surface) : 13 Inches
Aquarium Specifications (lengthxdepthxheight):
60inch x 18inch x 26inch
Note:
-Back of tank is painted black
-Aquarium features a coast to coast low profile overflow
-Water clearity should be optimal (100% water change performed within 48 hours)
Peak Light Output On Slow Acclimation Setting:
Settings:
Ch1: 77%
Ch2: 100%
Ch3: 80%
Ch4: 77%
READING AVERAGE
Top of water: 600
Halfway: 300
Sandbed: 200
_______________
Manual Setting 50% All
Settings:
Ch1: 50%
Ch2: 50%
Ch3: 50%
Ch4: 50%
Top of water: 350
Halfway: 250
Sandbed: 150