Setting up a closet

[Bush Grower]

I'm starting to think about my setup for my closet gig I'll soon undergo when I get back from vacation in a few weeks. First I'll give some details...

It is a 5'7x6 closet, in which there are shelves on 3 of the walls. I will be ripping out all of the shelves except for 2 on one wall. Those two shelves will hold my mom's and a homemade cloner. They will be closed off from the rest of the room with panda plastic doubled up so the white side is the only one showing on both sides and sealed with velcro for easy access.

One 6 inch exhaust w/fan will go up through the roof into the attic out of the top mom chamber. There will be a maze of 6 inch duct work that I've already worked out. It will pull air our of the Flower Room from the top, and go from the bottom mom chamber to the top one and out of the closet. This is my exhaust system for the whole closet.

The intake will be one 8 inch intake from the central A/C system with a booster fan to the floor of the veg/flower room.

I will have a 1000watt HPS with a MH conversion bulb in the veg/flower room. The light is aircooled by another fan and 6" ductwork coming from the ceiling, and right back out the ceiling.

The whole closet will be CO2 enrichriched with a CO2 generator. I will lay down the dough for an expensive growroom controller I've been looking at. That will control my intake/exhaust fans and stop CO2 enrichment when hey are running. It will also keep my CO2 ppms at exactly where I want them when the fans aren't running.

I wanted to properly explain my ventilation system so I can get to my two questions.

Temps in our attic get verrry hot during the summer.. something like a 100 degrees all day long. My first question is this... can I get by with running the attic's hot air through my 1000watt light and still keep temps in check witout wasting too much CO2... or will it be worth running a 6inch line from the A/C through the light?

Second question. Is it true that CO2 enrichment is not needed in dark cycle?

EDIT- Just thought of a third question. I jut movd to a very humid enviroment and have never had to worry about humidity. Where should a dehumidifier b placed in a grow room. Up high or down low... considering air is exhausted up high.

I'm sure I'll have more questions pop up throughout the build. This will be my first grow with CO2 enrichment. I'm excited, I finally get a chance to build my dream closet and I want to make sure to hammer out the details before the build so I don't have to redo anything. From my past grows I've had to redo so many things and I think we all know how annoying that is.

Sorry to type your eyes off Thanks for your time

 

[impeachme2]

I'm starting to think about my setup for my closet gig I'll soon undergo when I get back from vacation in a few weeks. First I'll give some details...

It is a 5'7x6 closet, in which there are shelves on 3 of the walls. I will be ripping out all of the shelves except for 2 on one wall. Those two shelves will hold my mom's and a homemade cloner. They will be closed off from the rest of the room with panda plastic doubled up so the white side is the only one showing on both sides and sealed with velcro for easy access.

One 6 inch exhaust w/fan will go up through the roof into the attic out of the top mom chamber. There will be a maze of 6 inch duct work that I've already worked out. It will pull air our of the Flower Room from the top, and go from the bottom mom chamber to the top one and out of the closet. This is my exhaust system for the whole closet.

The intake will be one 8 inch intake from the central A/C system with a booster fan to the floor of the veg/flower room.

I will have a 1000watt HPS with a MH conversion bulb in the veg/flower room. The light is aircooled by another fan and 6" ductwork coming from the ceiling, and right back out the ceiling.

The whole closet will be CO2 enrichriched with a CO2 generator. I will lay down the dough for an expensive growroom controller I've been looking at. That will control my intake/exhaust fans and stop CO2 enrichment when hey are running. It will also keep my CO2 ppms at exactly where I want them when the fans aren't running.

I wanted to properly explain my ventilation system so I can get to my two questions.

Temps in our attic get verrry hot during the summer.. something like a 100 degrees all day long. My first question is this... can I get by with running the attic's hot air through my 1000watt light and still keep temps in check witout wasting too much CO2... or will it be worth running a 6inch line from the A/C through the light?

Second question. Is it true that CO2 enrichment is not needed in dark cycle?

EDIT- Just thought of a third question. I jut movd to a very humid enviroment and have never had to worry about humidity. Where should a dehumidifier b placed in a grow room. Up high or down low... considering air is exhausted up high.

I'm sure I'll have more questions pop up throughout the build. This will be my first grow with CO2 enrichment. I'm excited, I finally get a chance to build my dream closet and I want to make sure to hammer out the details before the build so I don't have to redo anything. From my past grows I've had to redo so many things and I think we all know how annoying that is.

Sorry to type your eyes off Thanks for your time

Are you venting the closet room air? If so, forget about CO2 and a dehumidifier. If you run your lights at night, you can get away with blowing attic air through your lights.

 

[Bush Grower]

I'm not sure I get your reasoning. The intake will only be running when the temp gets too hot, and CO2 generation will shut off during this time. And I live in a very humid area. The dehumidifier will run only when it gets too humid, most of the time the intake and exhaust will not be running. Only when temps get above the set point. So I don't get your reasoning on not needing the above. I'd like to see the boost in growth rate and yield that CO2 provides.

That may work for flowering, running the lights at night. But during veg I think the air would be pretty warm.. I need to look up morning/evening temps, I think the are still pretty hot here, esp. in the summer.

Any other thoughts?

 

[Bush Grower]

After thinking about it a little bit, you are right, the whole intake from the central A/C thing isn't going to work. The A/C system will be pressurized with air when the A/C kicks on, this will send air into my closet when I don't want it to be and ruin CO2 production/dehumidifying.

I am either going to have to cancel the whole CO2 enrichment thing, saving me a lot of coin, or buy a window a/c unit and make a box for it adding even more cost to an already pricey CO2 system. I'm not sure it's worth the coin and time I'd have to spend to make it happen. I have some thinking to do about that.

I looked at temperatures by the hour here. And I would not be able to get away with running the lights only at night. It is still ~95 at 9 PM here, and by 11am it's back into the 90s and rising. That's not enough time to allow the air to cool during veg.

My plan is to crap the CO2 enrichment thing unless anyone else has an idea... I don't want to take the trouble/money/electricity to run a window A/C unit and don't want to intake through the door.

 

[easyrasta]

If you have good air circulation, the co2 is not need.
But you have to continually exchange the air, bring some in and some out.
Peace
Ez

 

[WaterFarmFan]

Hey Bush Grower. Take a look at my current grow thread below. I run a 1K in a closet, run atic air through the light in a sealed hood and bring in air from the central AC.

Here is a diagram of my ventilation:



WFF

 

[WaterFarmFan]

Forgot to mention that I do not use co2 with this setup.

 

[Bush Grower]

I have completly scrapped the CO2 idea.... that will save me a lot of money and headache up front anyways. That looks pretty similar to what I'm thinking about doing. Except only having one 6inch intake. As my whole closet (mom's & veg/flowering room) are the size of your flowering room.

Infact, my closet will look pretty similar as I will be using modified recirculating Waterfarms. I won't be running 8 though, I need something like 2 of them for mom's. I have installed 1/2 ebb and flow nipples on all of the buckets, and will be using a 300~ gph pump to push all the nutrients for a lot of nutrient aeration/movement.

I've been following your grows and how you modded your system. I like how you added the big rez. into circulation on your system for a more stable solution. I have not decided whether I will do this or not. Any suggestions?

 

[impeachme2]

Can you keep a central A/C's fan on to constantly blow air out of vents?

 

[Bush Grower]

Can you keep a central A/C's fan on to constantly blow air out of vents?

Most ACs have ON/AUTO/OFF settings. Just set it to ON.

 

[DankGrowsOnly_1]

U got a sweet grow coming to life. I'm in a closet as well and tackling ventilation issues as well. I have 332 watts of CFL's in 3 Sq. Ft. Anyways, just thought i'd throw this out there if u still want CO2 enrichment: A little higher temps is good for CO2 enrichment, say 85-90 would be optimal i believe. Read up on it. There's also real cheap DIY Co2 setups for less than $100US u can get a paintball supply shops. Just takes a little patience and research.

 

[GrassRoots]

In my 5.5 x 6 x 8ft walk in closet with 2 x 600watts I run a passive intake which is a 6''x14'' hole in the wall covered with a light tight box that passively brings in air from the bathroom which has central a/c blowing into it. I exhaust that air into my attic with a 4'' can fan brand inline fan connected to a can fan 33 carbon scrubber. I air cool my lights with hot attic air and I only have 1 6'' vortex that I use to pull air through the lighting system and exhaust back into my attic. Temps stay in check pretty well, they range from about 73-85 degrees but I do run the operation from 8pm to 8 am. I have yet to really veg them in there during the summer time so I can't really tell you how manageable that would be. You would help it some by using insulated ducting and maybe covering the hoods with insulation or something like that. I do not do either of these though as my temps have been alright.

 

[hbstoner]

I used a similar system to this and noticed one thing, when you use any kinda fan to suck air out of the central a/c system... it causes pretty much all the cold air to go into those rooms and the rest of the house gets hot since the central a/c fan doesn't get to push it anywhere else. guess all depends on if you want your whole house cold or not. im having better luck right now just having it vent into the room with no fan and cooling the rest of the house. then i can pull air from the rest of the house that is around 79 degress so it seems to stay cooler that way.

Hey Bush Grower. Take a look at my current grow thread below. I run a 1K in a closet, run atic air through the light in a sealed hood and bring in air from the central AC.

Here is a diagram of my ventilation:



WFF