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this is far red, I thought that if you use 5000k you put additional "normal" red as supplemention for all 12/12 hours...

thanks for the suggest, never considered before. what do you use as red supplementation?

Thank you @coreywebster for the fast answer, that's a great tool !!! I recalculate it in meter (I'm in europe) and the ppfd are too low: CXB3590CD36V3500K 10 COBS @1.4A ON 1.813 PROFILE HEATSINK ************ 2 mw 240 @1400ma 1.92 SQ.M. CANOPY 94% EFFICIENT DRIVER @19 CENTS PER KWH Total...

Hi, I have a DIY grow room 3,94 x 5,25 h.6,56. I have read several posts here but I haven't really understoood how many watt I need to my grow space and how calculate that. I know that I need 850-1100 ppfd for. At the moment I use a 600w Hps with good results (0,7 gr/w) in cocco but I want...

Hi, I'm new here but not of the growing. I'm really interested in DIY COB light and I already learned a lot from this forum. Hope to start soon my first panel.