Radion vs. AI Sol

[sphelps]

Originally Posted by Oilers

So that I am clear. For Radion, you don't need to buy a separate controller but for Sol you do. Am I correct?
My tank is 5x2x2. Somebody already told me that I would need 3 Sols to cover my tank. Does that mean I need 3 Radions as well if I choose Radion or would 2 be sufficient?

Radions have controller built in, sols do not and require the purchase of one or they work will most aquarium controllers. You would need at least 2 Radions for the tank, 2 would be about the same as 3 sols.