Par rating for x15 G6 Pro

[scags101]

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.

 

[ninjamyst]

2 xr15 is not enough for a 120g. BRS has videos that show par readings.

 

[Lavey29]

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.

 

[scags101]

Ok I’ll have to get a couple more before I put sps in the tank

 

[scags101]

Thank you for the replies

 

[Lavey29]

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.

 

[radfly]

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.

 

[Shanephillips27]

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.

More xr15s are better than less xr30s

 

[VintageReefer]

More xr15s are better than less xr30s

Better for coverage but not par / depth.

Xr15 has a high drop off once you start measuring in deeper tanks

People do it but they are spacing them every 12-16 inches and usually also supplementing them with led bars or t5

 

[Shanephillips27]

Better for coverage but not par / depth.

Xr15 has a high drop off once you start measuring in deeper tanks

People do it but they are spacing them every 12-16 inches and usually also supplementing them with led bars or t5

That problem is solved with the high intensity lens kit.

 

[Shanephillips27]

That problem is solved with the high intensity lens kit.

I have a 90 gallon which is 48 x18x25 I run 2 xr 15 g6 pros with high intensity lens and my corals are super happy.

 

[rtparty]

Each XR15 is covering 24*18 with plenty of PAR for anything I wanted. The AI Blade wasn’t needed but I left it installed since it was already there. Its main use was for a cool 15 minute super actinic violet look.

2 XR15s are better than 1 XR30 if you need a little more spread. This has been proven many times

 

[Lavey29]

More xr15s are better than less xr30s

It's a 2 year old thread but I'll give you a reply. XR15 lights are a weak soup sandwich for par. If you notice my post, I said 3 XR30 lights (not 2) are better then 4 XR15 lights. This is quite obvious 6 dome bulbs versus 4 domes. As the previous poster mentioned, tank depth plays an important role in lights and par. Also coral choices make a difference. Now ecotech recognized the deficiency in gen 5 and earlier models and improved spread with gen 6 models and the different lens options give better par but less spread. Basically each tank is unique and a reefer has to determine what works best in their set up. I can grow stuff with my 2 XR15 lights but they are at 100% and produce barely enough par needed for my 22 inch deep tank. XR 30s would have been much better for my tank

 

[Shanephillips27]

It's a 2 year old thread but I'll give you a reply. XR15 lights are a weak soup sandwich for par. If you notice my post, I said 3 XR30 lights (not 2) are better then 4 XR15 lights. This is quite obvious 6 dome bulbs versus 4 domes. As the previous poster mentioned, tank depth plays an important role in lights and par. Also coral choices make a difference. Now ecotech recognized the deficiency in gen 5 and earlier models and improved spread with gen 6 models and the different lens options give better par but less spread. Basically each tank is unique and a reefer has to determine what works best in their set up. I can grow stuff with my 2 XR15 lights but they are at 100% and produce barely enough par needed for my 22 inch deep tank. XR 30s would have been much better for my tank

Interesting because I have 2 xr15g6 pros with high intensity lenses and I grow everything under the sun. Tank is 48x18x25

 

[Shanephillips27]

Interesting because I have 2 xr15g6 pros with high intensity lenses and I grow everything under the sun. Tank is 48x18x25

I also only run them at 55 percent

 

[VintageReefer]

I also only run them at 55 percent

Can you post a pic of your tank? Your results could benefit others

 

[Lavey29]

Interesting because I have 2 xr15g6 pros with high intensity lenses and I grow everything under the sun. Tank is 48x18x25

18 inch deep is fairly shallow and XR15 especially gen 6 models can work at that depth. My tank is 22 deep. My par numbers were ridiculously low with the gen 5 lights and corals struggled. At 100% I can get reasonable numbers but not high enough par in full tank coverage for everything I would like to have.

 

[Shanephillips27]

18 inch deep is fairly shallow and XR15 especially gen 6 models can work at that depth. My tank is 22 deep. My par numbers were ridiculously low with the gen 5 lights and corals struggled. At 100% I can get reasonable numbers but not high enough par in full tank coverage for everything I would like to have.

18 inches is front to back tank is 25 tall but with my rock work corals are only at around 19 inches down. Like I said before the high intensity lens kit for the g6 makes a huge difference. It tells you right there the increase you will see

 

[Shanephillips27]

Can you post a pic of your tank? Your results could benefit others

 

[rtparty]

My tank above is 22” tall and I had 170-200 PAR on the sand and didn’t run at 100%. Radions provide plenty of PAR. It’s literally beating a dead horse at this point. There are hundreds and hundreds of tanks running them growing every coral out there.