Lighting a 120gallon 48x24x24

[Brimmy]

I have 3 radion g3s and am currently running 2 of them. Before I start putzing around and add the 3rd do you think it will be overkill?

 

[X-37B]

No. You can always reduce intensity. Are they 15's or 30's?

 

[Brimmy]

No. You can always reduce intensity. Are they 15's or 30's?

30s

 

[dadnjesse]

I have 5 XR30's 3 Gen5 Blues and 2 Gen4 plus 4 T5's over my 48" tank. I have a Apogee MQ510 light meter and adjust to get the Par I want

 

[X-37B]

30s

2 should be fine. I would run 3 if they were 15's.
If it was me I would probably run 3 30's for complete coverage with no shadowing.
I have a few friends running 2 gen4 30's on a similar tank with very good results.

 

[landlubber]

the more spread the better. I have 2 Gen 5 XR30s and wouldn't mind a couple XR15s too over my 120 standard.