cobs heat

Hello, I know 1watt led = 3.4 BTUs so, I have question if use cobs with water cooling, Are BTUs for watt'll change? and how can I calculate heat Resulting from the energy of photons on the planting? something like this: https://www.rollitup.org/t/water-cooled-cobs.909674/

So, I have been a member here for a number of years. I have stopped in sporadically over the years for advice and now I'd like to give back. I'd like to chronicle my latest project- switching over to COB LEDs! A year ago I ran into these guys from ProMax Grow. They had a light priced around...

Hello there, My brain no have answer so referred me to forum full of people with answer brains... I had some free material around my shop and decided to build what turn out to be a 4 x 2 x 4 foot metal box with one 4" port vent. (For flower only) All materials are stainless steal that were...