Sealed GR for co2 help please

[Dr.GT]

hey everyone, i would like to share my plans for my sealed flowering room, and hopefully get some good opinions and some ideas from people who have successfully used this method.

here are my plans and the equipment i plan to use:

i plan to build a sealed, roughly 25 sq ft room within a room in a basement, measurements are 5x5x7 ft. 10-12 ladies
framed in 2x4's and walls built with drywall, sealed with silicone etc. and plastic sheeting to further seal the inside off. 100% light and air proofed.

i plan to be using a sealed 1k hps
cooled by either one 400+ cfm inline blower, or two inline 250 cfm inline blowers.

the light cooling system will go as such. blower>wall>light>wall>maybe another blower pulling then pushing the air out into the next room to disperse it into the rest of the house. (sealed off from the grow room) the ballast will also be on the outside of this room to help eliminate heat and fire hazards.

everything will be controlled with a climate controller, dehumidifier, co2 and a co2 controller keeping it at 1500ppm during the day and shut off at night (400ppm) with 2 osc. fans to circulate the co2 within the room. so i can completely manipulate the room however i want it.

will the blowers cool the light off enough to keep the room at ideal temps? i have read about using an a/c unit, but the places i got that info from are from rooms that are almost sealed and are still ventilated. and if i do need one, how would i go about cramming it into such a limited space? would i need to build it into one of the walls? or would i even need an a/c unit to cool to room off in my case? i could downgrade to a 600w hps if i need to.

also i have been told to use a can fan and a scrubber inside the room to eliminate smell and keep it from stinking up the house.
i have 2 problems with that and maybe they can be verified here.
if the room is air tight and completely sealed, how would it be possible for the stink to escape? besides when i am working.
and i have also read that a carbon scrubber will remove co2 from the air. so doesnt that defeat the purpose of using co2 in a sealed room?

also is fresh air an issue when using co2? most things i have read, say that fresh air is not needed when using co2, you only need to remove moisture from it. as plants would only use the co2 in the fresh air anyway... it makes sense to not have to ventilate. but of course there are those who disagree.

from everything that i have read and studied my plan seems to be pretty well on the money, but any help or suggestions here would be greatly appreciated.

 

[Dr.GT]

this is a picture i got from another source. but it basically shows my plan visually.
the reason for blower number 2 in the diagram is only to remove excess moisture from the air, and to cool the room just in case blower number 2 fails for some reason, and doesnt bake your cookies.
but i plan to concentrate more so on keeping the light cool as i wouldnt need to have to worry about failure of the blower to cool the light. i have that covered. and i only would need to replace blower number 2 and the passive intake simply with a dehumidifier.

 

[Lazyman]

Yeah, you don't want to do air exchange because you'll lose your CO2, running sealed rooms almost always involves air conditioning for this reason. I wouldn't bother with CO2 until you had several runs in on your new system, as it will only help if everything else is optimal.

See my sig for more info on CO2 and sealed rooms...

 

[Dr.GT]

oh yeah, i will definitely be giving it many test runs to get everything dialed in, if i have to waste a bottle of co2 so be it. but i will be sure to have it all dialed in and ready before i start growing anything. as well as compensate for higher humidity levels for when i do.
and i will definitely be looking into an a/c unit.
but im only going with 25 sq ft, and im wondering how bulky the a/c unit is going to be for the space i have. as that would up my costs quite a bit if i have to build the room bigger on top of the price for the a/c unit itself. as i have a budget of about 2500. but it seems im on the right track here.
thanks for that link, it will be very helpful.

 

[overbudjet]

do you have a easy and cheap acces to water if yes
I am in the process of making DIY heat exchanger DTW for less than 3
hundred box 12"x12"x36" you can hang it to the ceeling

peace to all

 

[Dr.GT]

that is awesome, where do i find out how to build it? i may be able to have access to water...

 

[overbudjet]

I will post a DIY as soon as i can

peace too all

 

[morrisgreenberg]

do yourself a favor and get a 5000btu a/c from lowes or HD they are dirt cheap especially right now, thats more than enough to cool that litgh along with a/c hoods. all because summer is always around the corner. sealed rooms will also require a dehimidifier for nights during flower, the a/c is a natural dehuey but it will be off mostly at night

 

[foaf]

and i have also read that a carbon scrubber will remove co2 from the air.

no it doesn't. good luck. its fun messing with all this unnecessary but helpful stuff, isn't it?

 

[Dr.GT]

yeah tons of fun. so i have read around and read a few times that just getting a carbon filter and setting it or hanging it in the room will work just fine, is this true?

and yeah youre right, i found an a/c unit at hd for 100$
but most of what they sell are window units, how would i go about using a window unit in a sealed room? im thinking of portable. so i can just set it in the sealed room. but they are bulky as hell and im cutting into my plant limits within the room. 25sq ft really isnt that much space.

 

[NUMB]

Dr.GT

I grow in a space the same size and just made the move to sealed a little while ago. I built the A/C unit into the wall(vents facing into room and rest hanging out) and then followed the thread on building a AC box and vented it outside.

I tried the portable unit route as well. I ran thru a tank of CO2 in one week(thought I had it sealed...yeah right) with the portable unit running...took it out and replaced it with the window unit and the next tank has lasted 6+wks. Not to mention the portable unit I used couldnt be controlled by my Sentinel controller.

Numb

 

[Dr.GT]

Dr.GT

I grow in a space the same size and just made the move to sealed a little while ago. I built the A/C unit into the wall(vents facing into room and rest hanging out) and then followed the thread on building a AC box and vented it outside.

I tried the portable unit route as well. I ran thru a tank of CO2 in one week(thought I had it sealed...yeah right) with the portable unit running...took it out and replaced it with the window unit and the next tank has lasted 6+wks. Not to mention the portable unit I used couldnt be controlled by my Sentinel controller.

Numb

here we go someone with a similar setup, thanks, that answered my question. do you have any good links on how to vent the a/c outside? that is somewhat of a problem for me, as i do not want to vent ANYTHING outside. but of course if it seems logical in my case i will consider using the method.