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Hey all LED DIYers. I noticed that the lumens decrease for the warmer color temps and subsequently it seems people have suggested 3500k as opposed to 3000k as a sort of happy medium which keeps a lot of red but gets more lumens. What I don't understand is whether the PPF actually decreases. Is...

Hi all. Forgive me if this is somewhere among vast amount of information on this site, but could someone please let me know how to get the PPF given the lumens for a given Cree color temperature? It's easy to look up the luminous flux from Cree's datasheets, and to get to Lux given the beam...

Hi all. Thanks ahead of time for your feedback. I have an older led fixture with 16 cobs (some of which have failed) and I want to replace them with Cree CXBs. The drivers aren't a great match for Crees as far as I know... they are 550 mA constant current and voltage says 55 - 70v. What...

Hey everyone. Might you happen to know what a Seattle-area dispensary would pay per pound for a 16-18% THC strain?

Forgive me if this is a dumb question, but when I read about flushing in DWC, people say to use pH-corrected water (I presume this means 5.8 ). I don't really understand why normal tap water (mine has a pH of about 7.8 ) wouldn't do. The whole point of pH-ing, I thought, was to make sure your...