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Thank you Renfro i really dont know for sure what method i will use, if someone suggests a safer method i will use that one. On my current cobs i just connected the positive wires and negative wires to mains cuz they are like that, directly to the wall without any adapters and they are working...

One question, if one of the COB's fails what happens ? the power supply will burn the other one ?

Thanks coreywebster it really does, it means i was following the right path :D

Hi, i am a pretty DIY guy and i like to set up things so when a friend teached me how to grow i got there pretty quickly with a HID light and then after i tried lots of things like CFL's, some cheap leds, even bought those dirt cheap 50W cobs from ali express. I can't mesure ppfd's, the tool is...