A huge light in a small package
The New AI Prime 16 shares the same full spectrum cluster and features as the Hydra 32 and Hydra 64, as a result the new Prime will be called Prime 16HD as the new cluster incorporates 16 LEDs (+1 Moonlight) and the new TIR optic. 
At 55W this small but powerful light is perfect for tanks up to 20 x 20 inches or can be used in multiples on medium aquariums.