So yesterday I got a new toy to play with! It's a Horus One, a German COB with Cree CXB 3070 chip

This thing draws just 55 W and produces 150lm/W, which gives me about 8,300 lm in total from a single source. It works in PAR of 380-680 nm, and has a colour temperature of 3000k (soft white), which is better for flowering.

It came with Optotronic ote 50/220-240 led driver by Osram, that I still need to wire to make it work. And that's what I hope to do today.