What kind of GROW lights are you using?

[ReikoX]

Right now I’m using this old CREE COB LED.

Cob led......and GO!

I wanted to share with you all my DIY COB light I built. The light is based on four CXB3590s. These diodes are 3000K and run at 36 volts. The 3500Ks are more efficient, but I wanted more red in my spectrum. These are attached to a 30 inch piece of 5.886 inch extruded aluminum heatsink from heatsinkusa. Active cooling is provided by four Noctua 140mm fans. Finally, the COBs will be powered by a HLG 240H C1750B Meanwell driver. This driver is dimmable and will run the COBs up to 1750 milliamps. Wi…