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Sealed doesn't mean that no external air ever gets in. It means that you control when it gets is. Without a gas burning unit inside the tent you will create a very oxygen rich environment that can become dangerous. Likewise, you need to cycle the air that is inside the tent to refresh it. A 100%...

Not getting CO2 isn't a by product of extraction as much as it is a lack of intake air. To answer your question, yes a 100% sealed room with the correct environmental controls with CO2 generation controlled air intake and exhaust, controlled temp and humidity, etc etc will give you a controlled...

That isn't exactly true. Reds have never been more efficient than whites. Blues have and generally speaking still are because White diodes are simply blues with a phosphorus coating to change the hue. Therefore blue LEDs will always (until they change the process of making a white chip...

You would be surprised what a cheapskate DIY person can do with a little electronics knowledge and a $40 toaster oven from Wally World can do.

I won't give any exact information on my heat management system as of yet. To the best of my knowledge no other company in the grow light industry is using this tech. I would prefer to keep that information to myself for now. The system is passive for the moment but I am attempting to increase...

Unfortunately I don't recall the "tiff" we had, nor in any way do I wish to get anyone banned form any forums. If I caused such a thing my sincere apologies. I understand the reasoning for sponsors. Bills don't pay themselves. If you recall I called out nearly all of the sponsors that where...

As some of the guys here can tell you from reading my post on other forums, I've been doing this for quite a while as well. It's obvious that you are going to continue to not read your own links and make wild assumptions. Turning off our lights for the 12/12 flowering cycle is what causes the...

Upon the absorption of radiation, Pr is photoconverted to Pfr, and Pfr photoconverted to Pr, according to the following scheme: [COLOR=#000000][FONT=Times New Roman CYR]The absorption spectra of the Pr and Pfr forms of phytochrome isolated from etiolated oats show widely overlapping bands of...

You have this so wrong. The photos and links you yourself provide prove the information. Red light, generally studied at the 660nm wavelength. When the phythochrome receive this light they convert it to Pfr and switch to the active state. Per the article you linked and your wiki link. This is...

I'm not sure if you haven't read the article you are referring to or simply refuse to see what it says. 660nm is the RED (Pr) in the study not the Far Red (Pfr). Having a high number of 730nm Far Red will cause those things... not 660nm. It's quoted in the first portion of your post (#361). "A...

That article is interesting in a number of ways. "We have another situation, where fruits of a plant concentrate in the upper part of the stem. Classical example is wheat. The ear of wheat is supplied with assimilates, primarily from the upper leaves. With this crop, PAR must have approximately...

When discussing Phytochromes, Pfr is the active state meaning deep red or 660ish nm. The phytochromes turn 630-660nm red (Pr) into Pfr. Nearly all major plant lighting studies use 656+nm red (sometimes in conjunction with 630ish) including the NASA study which used peak wavelengths of 664, 666...

Sorry but would you happen to have a link to the thread on 660nm red that you are referring to. Likewise, I think you may have either misread or been thinking of another article on the use of green. This article indicates that as little as 10% (the smallest amount they tested) showed shade...

This is my first post on this sight. However, I have been reading post on this sight and many others for a number of years. Mainly because of the great communities and the sharing of knowledge. The MMJ community is always at the cutting edge of horticulture and test new technology before any...