ATI bulbs are one of the best. You could probably find a cheaper bulb but whats the point. ATI has the best par numbers out there in T5. Reefparadise sells them in flint, Preuss in lansing, Reefsolutions in whereever that is, I am not sure who or where else carries them.
Use a mix of ATI Aquablue Special and ATI Blue Plus.I really liked the color and growth running 3 of the Blue Plus and 1 Aquablues.Check our sponsor page and buy locally might find them cheaper online but by the time you pay shipping might be the same $