The ReefLED G2s benefit from a completely new chipset in their compact arrays, delivering a richer spectrum, and thanks to their new power management feature, they can be tuned from a 10,000K reef-white to a 23,000K blue, all running at full intensity, which was not available in the G1.Their signature REEF-SPEC Blue has also been augmented with violet and ultra-violet and boosted to 470nm blue at the top of the PUR spectrum, enabling fish and corals to truly shine. The ReefLED G2s are 100% Reef Safe & 100% REEF-SPEC, delivering exceptional coral growth and colouration.Setting the daytime lighting program is super easy: just set the desired colour (8000K-23000K) and intensity for different time periods of the day, and that’s it. In addition, the ReefBeat App now offers 5 colour/intensity presets that can be manually activated, including coral photography, UV look and more. ReefLED G2 features: Stronger REEF-SPEC light output Richer Reef-safe colour range Easier light setup by selecting the desired colour and intensity Homogenous light spread with minimal hotspots and minimal spillage Gentle shimmer in the aquarium ReefBeat App for easy set-up, operation, notifications and automated lighting programs. Optional clip-on visors for reduced glare ReefLED G2 Specs: ReefLED G2 60 ReefLED G2 115 ReefLED G2 170 Dimensions (cm) 12 x 12 x 5 15.5 x 13.5 x 5.7 18 x 16 x 6.4 Power 60w 115w 170w Surface PAR 500 500 550 Depth PAR 100 @ 50cm Deep 150 @ 50cm Deep 130 @ 80cm Deep