Par rating for x15 G6 Pro

scags101

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Hello.

I have 2 radion x15 pro g6 and I’m looking for par ratings at 100% on schedule and intensity for 8-10” mounted about the tank.
My tank is 120g at 24” deep. I’m running the ab+ schedule at 65% schedule at the moment. No new algae growth but I want to find what the actual par ratings are for 2 lights as I don’t have a par meter myself. I’m planning to have a mixed tank leaning to sps dominant and running kz for dosing. ULN system only 6 months old. Any help on the lighting much would be appreciated.
 
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Lavey29

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No way 2 of those lights are enough for SPS. Maybe 4 would work but 3 XR30s are better. I run 2 XR15s on my 65g DT and at 100% intensity I barely get 350par just below the water line. Mine are gen 5 with diffusers. They are weak lights.
 
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Lavey29

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Ok I’ll have to get a couple more before I put sps in the tank
I was actually shocked when I finally par checked mine at 70% intensity. It was like 150 at the top of a 22 inch deep tank and like 30 on the sandbed. I slowly cranked up to 100% intensity and am able to grow SPS at the top but I can tell a few acros still need more light then I have. There are quite a few video with nice 125g tanks and 4 radion lights though.
 
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IM 25 Lagoon, single G6 XR15 Blue. Has better light spread than previous gen, and is growing sps like crazy. At 12 inch below water surface the par is 150 with only 45% schedule intensity using default AB+ schedule, and that spread is 20” radius on the bed.

I would use at least three XR15 on a 125. And, from what I heard from Reef Therapy, two XR15 spread a couple inches apart make better par than a single XR30.
 

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