airflow and capacity/yeild questions

DrUgZrBaD

Well-Known Member
hmmm i like what ive read about using hps for flower so i think i really want to stick with them but i def dont want my lights smoking my plants before i can lol ... any recommendations on specific ac unit thats not a budget buster? lol
I don’t know about the portables
They are rated in btu’s so I’m not too familiar with btu converted to tones or is that even possible? You got much more cfm through your plenum than a portable will have, due to not needing to cook a vast area just a room
 

its.always.420

Well-Known Member
I don’t know about the portables
They are rated in btu’s so I’m not too familiar with btu converted to tones or is that even possible? You got much more cfm through your plenum than a portable will have, due to not needing to cook a vast area just a room
12000btu = 1 ton
3000btu per 1000w light is the standard i think

air cooled hood will help but make sure to keep the glass clean
 

its.always.420

Well-Known Member
hmmm i like what ive read about using hps for flower so i think i really want to stick with them but i def dont want my lights smoking my plants before i can lol ... any recommendations on specific ac unit thats not a budget buster? lol
i would carbon filter the tents and use a window a/c in the room, if possible.
 

oxvirgoxo

Well-Known Member
yep the flower tent plans include a 350cfm inline fan with carbon filter to run thru the de hps hood and thanks for suggesting the window ac that was my first thought when thinkin of a type of ac unit
 

oxvirgoxo

Well-Known Member
i also keep seeing to keep the glass clean i assume thats because oils or dirt/dust will disrupt the reflection of light particals and may cause hot spots?
 

its.always.420

Well-Known Member
i also keep seeing to keep the glass clean i assume thats because oils or dirt/dust will disrupt the reflection of light particals and may cause hot spots?
clean glass blocks up to 10% of light, so you want to keep it clean to avoid blocking even more photons. less light = less yeild
 

oxvirgoxo

Well-Known Member
you will need to keep it in to control smell. if you take it out, you will be allowing air to bypass your filter.
didnt even think of that :|... im still a ways off from being up and running but definitely want a solid foundation to start on and all the info i can get. im hoping to be setup in the next month or two i cant wait to start a thread in the grow journals so you guys can follow along with me
 

its.always.420

Well-Known Member
didnt even think of that :|... im still a ways off from being up and running but definitely want a solid foundation to start on and all the info i can get. im hoping to be setup in the next month or two i cant wait to start a thread in the grow journals so you guys can follow along with me
Keep posting through your setup, we can save you a lot of common possible mistakes.:eyesmoke:
 

TreeFarmerCharlie

Well-Known Member
Don’t forget to make sure your electrical outlets in the room aren’t all on the same circuit, too. I live in an old house (over 200 years old) and, even though all my wiring was replaced with romex years ago, i quickly realized my entire second floor (minus the bathroom) shares the same 15A circuit. When I started working from home I used to pop the breaker when I tried to print something if the lights in my tent were on.
 

oxvirgoxo

Well-Known Member
Don’t forget to make sure your electrical outlets in the room aren’t all on the same circuit, too. I live in an old house (over 200 years old) and, even though all my wiring was replaced with romex years ago, i quickly realized my entire second floor (minus the bathroom) shares the same 15A circuit. When I started working from home I used to pop the breaker when I tried to print something if the lights in my tent were on.
indeed sir! ive mapped out all the breakers in my box the room im gonna use is on a 15 amp circuit with 3 other rooms so i have renfro guiding me on my electrical we have plans including running a subpanel to my room hes been a godsend in that area
 

Renfro

Well-Known Member
gotcha so if i did vent into the attic definitely tie it into either the bathroom vent or stove vent so it doesnt go into the attic just thru it and out the roof
You could have a roof vent installed just for this use. Putting it on with another fan could cause issues.
 

oxvirgoxo

Well-Known Member
You could have a roof vent installed just for this use. Putting it on with another fan could cause issues.
or maybe thru the wall like some dryer vents? or since ill be looking into a window ac would they have some kinda air tight panel with hole in it you could easily pop into the window under or above the ac unit?
 

TreeFarmerCharlie

Well-Known Member
or maybe thru the wall like some dryer vents? or since ill be looking into a window ac would they have some kinda air tight panel with hole in it you could easily pop into the window under or above the ac unit?
There are some available but thought they seemed expensive for what they are when I looked for them a couple of years ago. They would be worth it if the window is street facing. The widow I use is on the 2nd floor, facing the back yard, so I cut 2” blue foam board from Lowe’s to fit the width of my window frame, 8” tall, and then cut a 6” hole into it for my vent hose. Then I just stuck it in the window frame, pushed the hose through the hole until it went up against the window screen, and closed the window on top of it. My method would not be a good solution if you vent outside during the winter. I vent back into the room in the winter to help keep the tent warmer and humidity up...I’m also cheap and don’t like exhausting all they heat out of the house (:
 
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