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To my understanding it still falls under the "Emerson Effect" category. Technological advances just allow us to see more data and reactions, expanding the scope of the effect. Same principles involved.

This is one of the studies that I have based my ideas on how the "Emerson Effect"/ photo systems I &II work. The extent of the effect varying by plant species of course. http://www.sciencedirect.com/science/article/pii/S0005272805001192 Edit: Apparently measurable O2 evolution occurred up to...

My buddies and I watched this last week and I was crying!! Haven't laughed that hard in years :eyesmoke:

Prototype Lightsabre?

Thanks for reporting your results! I've been waiting for more feedback from folks before diving in into Far Red experiments.

Yes.. But you have to move to California. http://oaksterdamuniversity.com This is where professional growers come from:bigjoint:

That's because those are arbitrary and irrelevent numbers being posted. Lot's of people have even been estimating their PPFD based off of efficiency spreadsheets and individual chip tests, regardless if their "build/grow" is totally different. :confused: There is no standard distance...

I also have been finding that my plants seem less stressed where I'm spot reading under 600 umol, while still fully developing. Putting them under 30 Mol for the day. The colas getting 1100 umol aren't much bigger, but the colas getting 150-300 umol are much smaller.

What is your experience with minimum/maximum light levels vs length of 'day'?

So I've been spending some time thinking about the optimum light levels our plants need based off of Light Cycle Duration and also what stage of growth the plant is in. According to my quick google searching, most mature 'High Light' plants require 12-18 Mols/ Day and 'Very High Light' plants...

Yodaweed has a history of misunderstanding graphs.

Then we all must be HUGE pussies then huh? I mean shit, they can do it right? Oh I forgot they were in a warehouse :roll:

That was a jk moment...

I consistently hit "2 per light" btw.

The Jungle Boyz bro. If you aren't pulling 3-4 a light with cookies cuts then you are a fucking joke and should just quit:lol:

This is how this thread makes me feel. These discussions are so pointless:confused:

Yes, this is for CO.

Pyrethrum is approved for commercial sites, but it has to be on the 'approved' list. I believe it is the aerosol bombs that are not allowed, but that I would have to double check on. We have a few organic commercial operations that use this product to treat mites. We have to order it from Ag...