How many radions xr30 pro should be used on a 120 gallon with sps only? They will be run with 4 t5
Correct 4'. I've been told I need 4 to replace my metal halides.
If you were not keeping the t5s you would need 4 for best results certainly. Fortunately you still have the T5 lights on it.
Did you have 2 or 3 metal halides on the tank? If I was forced to give up my MH I would at least start with the same number of the Radions if I had to get them.
I think you're better off with 4 of the XR15s compared to 2 XR30s. That way you can space them out a little for better coverage. Then you can easily add more if needed.
Bulk Reef Supply has a great video showcasing how it's a better idea.Didn't think about that. Thanks for the idea
For SPS only, I'd stick with the metal halides. When I ran Radions for a year, I had a ton of shadowing problems and not nearly the same growth. With the halides I didn't have shadowing and I had better SPS growth and more natural coral colors.
If you do go Radions I would suggest at least 3 xr30