Be confident in your purchase we're an Authorized ATI Dealer. How cool is that?!?!? ATI has been some of the most sought after bulbs in the reef aquarium hobby. With their bright crisp colors, ATI are our number one choice when it comes to T5 bulbs. With ATI bulbs you can use a single color on its own or you can mix and match to make the ultimate spectrum. Combines the properties of a full-spectrum bulb with an elevated blue color peak producing a bulb with an approximate color temperature of 15,000K. ATI has been some of the most sought after bulbs in the reef aquarium hobby. With their bright crisp colors, ATI are our number one choice when it comes to T5 bulbs. With ATI bulbs you can use a single color on its own or you can mix and match to make the ultimate spectrum. The ATI AquaBlue Special combines the properties of a blue bulb and full spectrum daylight bulb producing a color temperature of approximately 12000K. Great as a stand-alone bulb or in combination with an ATI Blue Plus or an ATI True Actinic 03. The ATI AquaBlue Special is one of the most popular white bulbs. Has just a hint of blue.