do i really need a fresh air intake?

zem said:

no need for CO2 enrichment with normal lighting since it will not benefit plants until the light is stronger than usual. it only adds to cost and complication and is useless. dial the room completely then see if you want CO2

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Standard growing conditions typically include concentrations of CO2 at 300-500 ppm, temperatures between 65-80°F, and relatively low humidity (20-40% rH). Studies have shown optimal growth and yields at 90-95°F, 1,500 ppm CO2, 45-50% relative humidity, 7,500-10,000 lumens/square foot of light, and vigorous air movement both above and below the canopy. CO2 enrichment under 80°F, under 7500 lumens/sf, or above 50% humidity is not recommended because plants will not be conducting photosynthesis quickly enough to benefit from the enrichment

AdamBlack760 said:

Standard growing conditions typically include concentrations of CO2 at 300-500 ppm, temperatures between 65-80°F, and relatively low humidity (20-40% rH). Studies have shown optimal growth and yields at 90-95°F, 1,500 ppm CO2, 45-50% relative humidity, 7,500-10,000 lumens/square foot of light, and vigorous air movement both above and below the canopy. CO2 enrichment under 80°F, under 7500 lumens/sf, or above 50% humidity is not recommended because plants will not be conducting photosynthesis quickly enough to benefit from the enrichment

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exactly! and it is doubtful that he has 7500lumens/sq.ft with only LED's

zem said:

exactly! and it is doubtful that he has 7500lumens/sq.ft with only LED's

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my bad forgot about that part.
Homeboy needs a 1k hps

the LED's don't give off any heat...yet they have cooling fans mounted in them? huh interesting.

Yeah, pumping fresh air from the outside is a great way to bring all kind of bugs and mold spores into your environment and makes for a nice fluctuating temperature which MJ really loves. Lastly, it also provides an easy way for smells to get pushed out of your room.

If you were really serious about maximizing yield and environmental control you would seal that shit up. But then again, if you were serious you wouldn't be buying LEDs know would you.

I have now used up my one smart ass comment for the day.

legallyflying said:

the LED's don't give off any heat...yet they have cooling fans mounted in them? huh interesting.

Yeah, pumping fresh air from the outside is a great way to bring all kind of bugs and mold spores into your environment and makes for a nice fluctuating temperature which MJ really loves. Lastly, it also provides an easy way for smells to get pushed out of your room.

If you were really serious about maximizing yield and environmental control you would seal that shit up. But then again, if you were serious you wouldn't be buying LEDs know would you.

I have now used up my one smart ass comment for the day.

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LOL..was just wondering if you'd seen this thread or not.. Why does it seem like RIU prefers intake/exhaust..if you look elsewhere you see tons of amazing sealed room examples. Just because you don't have intake and exhaust in your room doesn't mean its a problem, if you setup your room correctly it won't be a problem.

X

xivex said:

LOL..was just wondering if you'd seen this thread or not.. Why does it seem like RIU prefers intake/exhaust..if you look elsewhere you see tons of amazing sealed room examples. Just because you don't have intake and exhaust in your room doesn't mean its a problem, if you setup your room correctly it won't be a problem.

X

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Word. The less "fresh" air in my room the better. My buddy spends half of his time dealing with knats and aphids and mold yet he doesn't want to seal his room. It requires more capitol but it sure can take out allot of variables.

legallyflying said:

the LED's don't give off any heat...yet they have cooling fans mounted in them? huh interesting.

Yeah, pumping fresh air from the outside is a great way to bring all kind of bugs and mold spores into your environment and makes for a nice fluctuating temperature which MJ really loves. Lastly, it also provides an easy way for smells to get pushed out of your room.

If you were really serious about maximizing yield and environmental control you would seal that shit up. But then again, if you were serious you wouldn't be buying LEDs know would you.

I have now used up my one smart ass comment for the day.

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well, let me explain a lil please...
as of now the rooom is completely sealed, I AM SERIOUS about maximizing yield..and enviromental controll...my argument against the fresh air is fluctuating temps. I am willing to add a HEPA filter on my intake to stop molds, pests ect...

NOW... as for the lights...a buddy is letting me use them! i was willing to try them...4-5 270w supernova ES's on light movers, save me some cost on energy and controlling temps? i have the option of running 2 of his 1000w lamps with monster hoods again with the light movers...

All of this hate on the LEDs...tell me that yall have used the same set up and then give some feed back...

pair of 1k hps for flower sealed room for my co2 burner. At lights off i run a exhaust with a carbon filter to scrubb the air and then open a vent for a filtered passive intake