NEED HELP! Ventillation, AC, NO FRESH AIR

HI ALl!!!! I need some assistance here, thanks for the help.

I have such a great room in my home for growing indoors. But there is no fresh air leading to it. It's below an upstairs bedroom so no way to attach a hose from the central ac. can't run fresh air from one room to the other by cutting a hole in the door... it's the lowest part of the house, a step down from the rest of the rooms and floor level. BUT THERE ARE TWO WINDOWS, the openings about 21". the windows are obviously bigger, but you know once you open them up half is glass..half is open to the outside.

How do I ventillate it, I need to bring in fresh air for my garden right? And I need to control the temperature of it? I was thinking a window mounted HVAC... but i don't know how they work, do they suck in air from the outside when cooling and heating...THAT WOULD BE PERFECT!

any ideas are SO WELCOME!

Thanks!!!

http://www.youtube.com/watch?v=HuMa6x94UF0
you should do what this dude did with his window. Really good idea.

stupid said:

http://www.youtube.com/watch?v=HuMa6x94UF0
you should do what this dude did with his window. Really good idea.

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I have seen that video, guy does a real good job on the construction of things. But I understand that that window is used to exhaust his air, not bring it in.

I think you should first decide what kind of lighting you'll use, and how much of it before you forumulate a cooling strategy. Your light setup will largely dictate how aggressive you need to be with cooling.

Cr8z13 said:

I think you should first decide what kind of lighting you'll use, and how much of it before you forumulate a cooling strategy. Your light setup will largely dictate how aggressive you need to be with cooling.

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k well lets say I choose T5HO the whole way. I just change out the spectrum.. save me a lot of money on the utilities... and I think t5ho's are cheaper than mh or hps right? You have any tips on how many t5ho's I would need to grow 12 plants, as big as they can get too.. i dont' want to use the sea of green method.

I'm thinking like the 54 watt ones... they put out 5000 lumens/sq. ft. per bulb right? so if i buy an 8 bulb fixture i just got 40,000 lumens right? buy three or four of those, and that should grow my 12 plants just fine. I wish it was winter right now because then I could just run a test trial.. the problem is this has to be set up so that once winter time gets here no adjustments need to be made.

Keep in mind that you need approximately 50W per square feet of grow space. T5's are cheaper, but HID(MH/HPS) lights offer the best results. If you're trying to save money, go with CFL's. T5's and CFL's don't put off much heat, so cooling shouldn't be too difficult. Will you be growing in an enclosed space or just the entire room? Have you thought about how many plants you plan to grow?

Cr8z13 said:

Keep in mind that you need approximately 50W per square feet of grow space. T5's are cheaper, but HID(MH/HPS) lights offer the best results. If you're trying to save money, go with CFL's. T5's and CFL's don't put off much heat, so cooling shouldn't be too difficult. Will you be growing in an enclosed space or just the entire room? Have you thought about how many plants you plan to grow?

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I have a good sized bedroom, but im going to chop it up... i want about 3 ft wide by 9 ft long to dry and cure my plants.. so that will leave me about 75-85 square ft to work with for growing. its about an 8 ft. high ceiling. i want 12 plants in within a couple months... and by second crop 18 of them.

and I don't know about how many watts i need per sq. ft. i just know that i want as many lumens per sq. ft as them babies can take...and I got the money for it, that's no worries.. I'm now really thinkign about doing t5ho all the way... I hear you on saying they don't produce as good of quality as hps and mh. but i wish i could find this post by this guy who used t5ho all the way.. he is what got me thinking about doing it... he had pics and everyting... ABSOLUTELY BEAUTIFUL! HUGE BUDS too... i mean there couldn't have been that much more a difference in quality if he was using mh or hps, i mean he was reaching maximum quality and thc potency...I couldn't believe it. but i don't know because my understanding is the same as yours and as most others...only use t5ho for veg

If you have the cash, go with HID. I'm not saying that T5's can't produce, just not as well as HID, which put out more lumens per watt than fluoros. Also, believe it or not, 12 plants don't require a whole lot of space. You could easily squeeze them into a large grow tent like this one:

http://www.wormsway.com/detail.aspx?sku=HO220&AC=1

Just something to think about, otherwise you'll have to partition the room.

Cr8z13 said:

If you have the cash, go with HID. I'm not saying that T5's can't produce, just not as well as HID, which put out more lumens per watt than fluoros. Also, believe it or not, 12 plants don't require a whole lot of space. You could easily squeeze them into a large grow tent like this one:

http://www.wormsway.com/detail.aspx?sku=HO220&AC=1

Just something to think about, otherwise you'll have to partition the room.

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I used to think that you had to have the reflective material as close to the plants as possible... and that's how ive seen most people doing it with tents and in videos... and then i was reading up about mylar... and don't get me wrong this is coming from someone selling mylar...but didn't seem any reason for this to be a lie...

They claim that open space is better for plant growth, and it highly increases the reflectivity of your room... having the walls too close to the plants leaves no room for the light to reflect around and around and around... which makes sense... but I haven't compared the differences myself

Mylar is very reflective, yes, but not much more than white colored walls, plus working with mylar is kind of a bitch. Lots of people use it, though.

Ok i did this my new grow room layout not finished waiting for my fat bitches to come out of flowering two weeks at most (pics on profile). For my first grow i only used t-5 high output only used one for four plants and had no light issues. So i have purchased a new light same one that will be added to do 8 plants nex time so 4 is the limit per light i would say. A rotating fan is all i used because the lights dont give off to much heat and the heat they do is good for the room temp being its winter time. Paint the walls white its easier and if you have to cut the room off put up the partioner that is plastic its white on one side and black on the other and have your feeding and clipping time be the same for both then no light leakage in dark time to worry about.