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Can anyone here not only tell me what my PPFD is but tell me how I get that number for future builds? I'm running (9) Vero29 3k Gen 7's over a 4x4 at 2.1a. Each string of (3) vero's is powered by an HLG-320H-2100B. They are all attached to a central PWM dimmer. Appreciate the help and the...

How many plants, what strain, what grow method?

Which seedbank is that at? I'm a decent grower. New to COB. This was a big build for me and a pretty steep learning curve but with the better COB lights, to my understanding, ~700w is equivalent to a 1kW HPS, with better spread too. Less penetration though, so it requires some better...

That 50w per sq ft is a little high for cob lighting though, no? I had seen a lot of posts with yields as high as 2lb per 4x4 or approximately 900g/1.5m2 which is close to what the better seed banks would specify for the high yielder at 550-600g/m2. Am I way off with my expectations under...

I have 5 meters squared, or 54 square feet of grow space. Using a recirculating and well aerated DWC system, how much dry weight should I expect under adequate lighting with big yielders like Super Skunk? Looking for input, specifically from any cob led growers out there. I'm using...

Thanks for the reply! I'll do that. I had read previously not to mix nutes outside of res. Any truth to that?

I have an eight system undercurrent RDWC system, plus controller. The controller bucket pumps into the first grow bucket via a 1/2" hose, and the rest of the buckets are connected in series with 1" hose. They are passively pulled back into the controller bucket, one by one, and recirculated...