R7S LED COB/SMD 30w DE led

Anyone used these ? I`m guessing just link 10 to 40 together and plug them in ?

30W? 1600 lumens?

so 53.4 lumens per watt....


what was the point in even staring a thread about this chunk of junk?

I can think of a few perfect slots for that bulb hahah. ^^^
But for growing it looks cool giveitatry