I mean, do they grow your corals better then say a reefbreeders unit? I dont think anyone has proved this, but if they have thats what i want to know. What about the radions? they are wicked expensive 2. Is it just because of the name? or the "well i can do weather and you cant", again does this do anything for your corals?(i have heard it does not help) so besides that they might looks nice and have more "controllability" why are they hundreds of dollars more for in some cases a smaller unit that covers less space?