WWC's 900g display has 12 radions. Yes that is a lot, however with a tank foot print of 12' x 4', that is one for every 4 sq/ft. Yes they also have T5 but only 6 - 4' bulbs for the entire tank. Considering that all of the lights are mounted 24" above the water's surface, it just goes to show how little light is required from these fixtures for amazing results.
Um... how do you figure 12 radions? I had a long talk with the guys there and they even showed me. There are 5 units there, not 12.
You're talking about the long sps tank along the wall as you walk in correct? Sits parallel with the checkout counter?