Michalm.... How many Rays are you putting in this? 4x4x16 is just a shade over 150gals... footprint is nice but still needs the water volume.... it would be an AWESOME ray pupe tank, or qt'd tank though, or a grow out tank... just depends on how many rays your gonna put in the puppy... sorry to derail, was just curious about the tank..
I do agree with JDBrock... i would def. do that