Hi All. I’ve been running gen 3 radion xr15s (3 of them) on my sps dominate Redsea reefer 250. The tank is somewhat shallow and most of the sps are 6 to 12” below the water line. I started with the standard 80 deg lenses on the lights, but that caused a major hotspot of par under the led puck. It was impossible to get even lighting on my top shelf with the 80 deg lenses; ps. The hotspot issue gets worst the higher you go up the tank.
So I swapped out the 80 deg lenses for the 120 deg wide angle lenses a year ago, and that helped spread out the light a bit, but at the expense of overall par levels. I was running the radions at 70% max intensity at the 18.5k spectrum and was getting Par between 200 to 300 over my sps.
Then I saw the new xr15 diffusers and couldn’t resist giving them a shot.
The diffusers obviously impose a reduction in par but the key question is: will the 80 deg lenses + diffuser outperform the 120 deg lenses ?
The short answer is, heck ya!
At the same max intensity (70%), I get substantially more par, better shimmer and about the same spread with 80 deg + diffuser vs 120 deg without diffusers!
Full review here: (a video tells a thousand words
So I swapped out the 80 deg lenses for the 120 deg wide angle lenses a year ago, and that helped spread out the light a bit, but at the expense of overall par levels. I was running the radions at 70% max intensity at the 18.5k spectrum and was getting Par between 200 to 300 over my sps.
Then I saw the new xr15 diffusers and couldn’t resist giving them a shot.
The diffusers obviously impose a reduction in par but the key question is: will the 80 deg lenses + diffuser outperform the 120 deg lenses ?
The short answer is, heck ya!
At the same max intensity (70%), I get substantially more par, better shimmer and about the same spread with 80 deg + diffuser vs 120 deg without diffusers!
Full review here: (a video tells a thousand words
