Review on NICREW Clip on Aquarium Light: Multi-LED Fish Tank Lighting with 2 Modes - White, Blue, and Red LEDs for Nano Tanks by Christina Love

Very good light, my aquarium plants love it. This is a "full spectrum" of red and blue LEDs as well as white LEDs. But it gets very, very hot with the included 20V power supply. Too hot to touch and I'm afraid it will break soon like my other Chyneez aquarium purchases. These are inefficient LEDs that get very hot. I replaced the included 20V power supply with an 18V laptop power supply. LED temps are better but still hot. 12 volts will light up few LEDs - and very dim, 18 volts seem to work fine. Maybe 16 volts would be better, but I don't have a 16 volt power supply. At 18 volts this is one of the best aquarium lights available. Plants love it, it appears to be durable, and most importantly - once the plastic tips are removed - it's the perfect replacement/upgrade for low-power Fluval Edge LEDs.