(4 photos must run in square) Ambient Glow Technology (AGT) from Universal One Corporation is a new line of high performance photoluminescent aggregates specifically designed for the concrete, epoxy and cementitious overlay trade. AGT contains no hazardous materials or VOCs and can be used on both interior and exterior concrete. AGT can be used as a LEED friendly renewable light source. AGT aggregate is available in two grades of sand as well as 8 and 12 mm sized stone in Aqua Blue and Green Glow. The aggregate is available in 1-, 5- and 25-lb. quantities.