How Long of a Tank Can 1 Gen 4 Pro Work For?

[Slayvoff]

So what's the longest tank that having only one Radion XR30W Pro will work just perfectly? For example, would one work on a tank the size of the Red Sea Reefer 250?

 

[aquaman30k]

Several factors come into play. Height of light over the waters surface, livestock kept, dimensions of the tank. Say you wanted to have a mixed reef in the Red Sea Reefer 250, I'd recommend 2 simply to prevent shadowing and even par distribution across the tank. It's usually recommended to place 1 Radion every 18-24". Being the RSR 250 is 35", I'd recommend 2. You could get away with 1 if you didn't mind some shadowing and only kept fish and soft corals.