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Cob calc can be found here https://www.rollitup.org/t/diy-cob-led-calculator.890214/page-14#post-14701729 Use the link in bggrass 's signature, below any of his posts. You need java to run it. Thanks im gona look at this now

Then for flowering maybe some combo of 3500,3000,2700K But your right to cost would super high. Especially if i run the cobs at a higher current for flowering - because then I need to buy all new drivers as well...

Growmau5 suggested a mix of 5000K & 4000K for veg. growing Seems like a good suggestion. Apparently having the mix of the two gives a little more space between nodes (4000 & 5000K having more blue light)

So I just made a quick analysis based on the the info docs provided for the: >Cree CXB3590, Luminus CXM-32, Citizen CLU58 1825 (the Bridgelux Vero 29 doc was too much of pain to read so i gave it up) What I did... 1. Work out wattage consumed at various currents (0.7A, 1.4A, 2.1A, 2.25A) >...

Yeah I watched a lot of Growmau5 videos, and Migrow, and Bruce Bugbee.... but no one seems to talk about going below 1400mA. I am pretty commited to LEDs now. It's a big start up cost but these things should last years if looked after. And they're pretty efficient.

Hello. I am planning to build a new grow room and I would appreciate some advice. I've done a fair amount of research but there are still some things I don't understand. Technical terms, maths and physics are fine by me. Grow space size = approx 13ft x 13ft (4m x 4m) but i don't need to use...