replacement bulbs

Hi folks! I picked up two old AI Hydra 1st Gen recently for cheap because Royal Blue channel doesnt work, so I decided to find out if I could repair it. After several tests, find that the problem is the burned out LED, so I have to replace them. I will need some XT-E Royal Blue LEDs, where...

I have been pondering the idea of switching to LEDS. I currently have 2x MH 4x T5 with led moonlight not ran since 2009. In the process of gathering equipment for my system to be back up and running after a LONG break. WOOW!! has technology changed! With so many brands and types of LEDS it gets...