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How hot do these lights run? I would think plasma would have a serious heat signature.

I'm looking for a LED light for my patio, to supplement shorter hours of sunshine. I'm not really concerned to much about cost, or the wattage. I am interested in both penetration, and coverage, but mostly quality and efficacy of the light. Can anyone help me with their own personal experience?

My pots wouldn't be sitting in water.

So the only problem is Root rot? Nothing else you can think of I should consider? yes, as i stated in OP, a plant needs O2 from the root system, but does it need it from EVERY PART of the root system? or if 5% is in water, is that ok?

I am wondering what potential problems we might have here... Might be a stupid question, but not as stupid as not asking and wasting a summer, so here goes. With hydration being such an issue, sometimes requiring watering every other day, why is immediate drainage so necessary? What I'm...

Well, thanks for all the help, its appreciated. Problem is, every relay is more expensive then a balast and switch. If one company had the sense to sell it for less than twice it's worth I would probably get it, lol. Bah stupid greed. Thanks again.

Any other thoughts?

OK... Now we are getting someplace. http://www.progressive-growth.com/proddetail.php?prod=43015 340 US to control 8 lights, not bad. Anyone got anything cheaper? Something that controlled one ballat and 2 bulbs for under 100$ would be perfefct.

So this HID relay is the same thing? I dont suppose u could point me to an example? Thanks, btw, for the help already.

Anyone have any links to a cheap Flip Flop Relay? Or maybe even jsut have a name? THanks ( A Flip FLop Relay is used to alternate the output of one 24 Hr a day Ballast to two 12 Hr a day Lamp and Hoods. It's used when the two lamps are in opposite light cycles)

Newbie here looking for a Flip Flop Relay thats actually cheaper then a 600W HPS ballast. Anyone have any links to a cheap Flip Flop Relay? ( A Flip FLop Relay is used to alternate the output of one 24 Hr a day Ballast to two 12 Hr a day Lamp and Hoods. It's used when the two lamps are in...

I want to run some 600W, 6" cool tubes and am curious how much CFM i will need to cool each of them. Going to use an inline and can fan, to push and pull, eventually thru a carbon filter at the end. How much CFM is necessary per light? + filter? Is there / What is the standard?

Yeah, that looks like the system. I guess my real question is, how much CPM is needed per watt of HPS lighting? IE - 600w HPS requires atleast blank CPM to cool to 72 degrees ect ect ect...

OK, again, thats really nothing more than your opinion, as there is no absolute in security, but just so we can drop this, the air will be vented from outside the grow room, but INSIDE the grow operation (from a cooler veg room), so a filter IS needed. Satisfied? If not, start a different...

I am, but while you can have too much water, too much co2, too much soil, and even too much light, you can never, ever, have too much security. Plus, it will create a negative pressure in the whole grow area. This means that in every little crack and micro fissure air can leak through will...

I am hoping to daisy chain the airflow cooling 2 600w HPS cool tubes. I would also like to push the air outside thru a carbon filter at the end. Can anyone link me or explain to me how much cooling (how big a fan(s) is necessary for this endevor and why?

NO, but I spent the last 6 hours researching this. And theres no sites with the info nearly so high a search index as this one, I tagged it here, so in a few weeks after google picks up the addition someone searching for this specific info will find it. :) Cheers

Boring? Skip to the bold. California gets 5,ooo Lumens at noon on a sunny day per square foot. Thats not really the answer to your question, how many lumens does the sun put out, but I believe that is the answer your looking for. EDIT: However, one must not forget to consider the rising and...

Does 24 hour light happen in nature? How about synthetic antibiotics? Let your mind wander man and be a LOT less cruel, it's not them who looks like the idiot.

It's only a book. If you're hear, you must value multiple rescources. Sounds liek this book is only one good rescource. The seeds I have bought, and seen bought, were usually in the judges packet of the Canubus Cup. These sealed packets could be visually compared to the images online, so I...