Lighting for a 40 gallon cube aquarium

[roccomorra]

Somehow I was a bit brain dead when I bought this aquarium, actually thinking it was a standard 40 gallon breeder. Being a 40 gallon cube, I would like to get feedback on my light choice. I have just received 2 orbit marine R24's with the stands and loop controller. Do I still need to use 2 with the cube configuration of this aquarium? Thanks for all the great advice you all give to us noobs every day!

 

[Timfish]

Wether you use one or both probably depends more on the animals you're keeping. But I don't see any issue with using both to get higher PAR levels since it's a taller tank.