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Okay, Okay! Now I get it! I guess I skimmed over that UCSB article in your link a bit too fast. I missed the part about: when the plant burns it's sugar to produce energy - it actually produces CO2 as a by-product. All doubt is officially withdrawn concerning this issue! Thanks for the...

Thank you for that link, I read it. The article talks about CO2 that the plant has absorbed and then, to some degree, released. That is completely whithin the way I understand a plant works. Much the same way that we inhale air (containing about 18% Oxygen). If we are exercising, we "burn"...

Well, I guess anything more reliable than just because "somebody" said so. Not just anecdotal claims, but hopefully some published research.

Yes. How much of that actually reaches your plants is a function of how well you understand, and utilize, the whole lighting process. As for the other question: PAR and footcandles have nothing to do with each other. PAR has to do with what spectrum the light is. Footcandles has to do with...

For the most part, I found this whole thread to be typical (somewhat indecisive). However: I saw reference to two things that got my attention: 1. The plants produce CO2 during the dark cycle (I seriousely doubt that!). 2. Keeping the "Lights On" and "Lights Off " temperature as close...

Yea, what he said! At least 2-3 times! The thing is, when you throw a seedling into a big pot, the roots just race to the "outside" (creating a "Root Shell") - leaving most of the volume of soil unused. Up-potting encourages the roots to form a good "Root Ball" that expands each time you give...

Cool your jets there, young Paduwan! A 1,000 watt HID is enough to light up an area of about 5 x 5 ft., just how many seedlings are you talking about? If you only have a few, a single 25 watt CFL (or two) should do nicely. A 1,000 watt HID burns one Kilowatt Hour for every hour that it is on...

Is it just me: or does 25 watts per sq. ft. sound a little anemic?

That is, just about, the most absurd thing I have ever heard!

This is just a little tip for anyone that looses soil (or perlite) through thier drainage holes: Before you fill your pot with soil - cover the drainage holes. I use little 1" or 2" squares of recycled window sceen (free!), even new screen from the hardware store is dirt cheap! Just lay the...

I'm impressed! 20 posts in less than 1 hour - on the same thread. That's got to be some kind of record!

3 1/2 weeks from seed is little quick, but stranger things have happened. The main thing you must do is get some clones off that "Speed Freak"!

Nah, a lot of the "larger sizes" aren't.

Yes, you can get it just about anywhere that sells gardening supplies.

Ha-ha, yeah I had to figure that one out too! I think he means "a soil with no nutes in it". He just omitted "nutes in".

What you want is just plain "Potting Soil".

If you think that is an advanced cultivation question, my mind boggles at how much you must not know! Find the right forum for Christ sake!

I have seen, lierally, hundreds of soil-mix recipes! That's not what I'm asking for, I have my own, thank you very much! What I'm looking for (and can't seem to find) is "somewhere" where they actually explain "The Art & Science of Soil Mixing" - (the whole nine yards!). Not just a bunch...

Running 4 filters "in parallel" (4 filters wide but only 1 filter deep), like you are doing, will only give you the benefit of a higher flow rate, because all the water only passes through a filter one time. If you run 4 filters "in series" (1 filter wide but 4 filters deep), like "one on top...

You should get a new grow partner - or at least tell your's to get his head out of his ass and find out what he is talking about!