Power for 4k grow

[Hydropimp]

I want to do a 3k or 4k grow I have 4 15amp receticles and one 20amp.

I am doing all of my learning in the closet but then will step out of the closet and will use the whole room to run either 24 bio buckets or 24 Ebb and flow buckets still thinking about what system to do.

I need to now how many btu's of cooling I need. Will 24,000 be enough?

Also I will use 8in air cool reflectors.

What is a good climate controll to use that has a photosencer for day/night temp and RH?

 

[MTF-Sandman]

24kbtu is plenty for 4k of light...it's actually probably overkill, but not a big deal. Depending on how efficiently your room is setup and your local climate, you might be able to get away with a 10-12kbtu.

Are you going to run a sealed setup or vented?

Depending on what you want in a controller, you should be able to find a quality one that suits your needs here.

http://www.n-g-w.com/product.php?id=04_ENV

 

[Guest]

Yea its overkill I do fine with 12,000 BTU and 3 non-cooled fixtures,with 4 aircooled 1K's I'd probably get a 12K BTU or 16K BTU max.Whats the sq ft of the actual room.If you have a window AC opposite the veg closet,get an air circulator(big fan) and hang from ceiling on a chain directly in front of the cold air grills,turn the circulator on low and it will push the cold air into the closet.Thats basically how I cool my vegging plants.I dont particularly like 75 degree vegging temps,the spidermites might decide to take a vacation in that environment.85 with a cool mist humdidfier works a hella lot better for me.

 

[Hydropimp]

Sandman - Bob thanks for the response

The demension of the room is 11x11x8.

If I run the room seal with with co2 what about the light am I suppose to vent the light or is that what the AC for?

I have one 1k and that shit gets hot as hell.

 

[MTF-Sandman]

You can run air cooled hoods and still maintain a sealed room...just use a dedicated intake from outside the room and an exhaust somewhere else outside the room - but the AC can handle it if you don't...it's just gonna cost you a little more on the power bill.

 

[Guest]

I'd probably get a 12K BTU or 16K BTU max.

I agree. by running the lights un-vented the a/c runs enough to keep the humidity under controll in a sealed room.

 

[Guest]

Not when its fullo plants bro,dehumidifier is a must in a sealed room.An absolute must during dark hours AC running or not,advised during light hours with AC running.I can pull over 2 gallons of water in about 14 hours when the rooms full and its only 8 by 8

 

[Hydropimp]

Sandman that was what I was thinking about closing one side of the hood and suxing all the hot air out through the roof.

 

[Guest]

I guess rooms will run different I run sealed, 3k in non-vented light, packed wall to wall, 12k btu window shaker, temps stay 85f to 88f, humidity stays 55% all day. I don't have to run my duhumidifier durning lights on...only lights out which is a must I agree with you on that. been doin it this way for a couple of years and pull bet. 1.8 and 2 bows per light with urkle. My rooms dimentions are a lot smaller so that may be part of the difference The dehum rating of a/c's could be the different as well but I thought the cooling power and dehum rating were closely related

I pay .37 per kwh so I have the motivation to make it work with using the least amount of juice... so runnin a duhum and a/c at the same time does not help that.

peace

 

[MTF-Sandman]

Sandman that was what I was thinking about closing one side of the hood and suxing all the hot air out through the roof.

The problem with that, is you're going to be sucking out all the CO2...as well as creating odor problems.

If you're gonna run a sealed room your options are 1. to run a dedicated duct in and out of the room or deal with the heat via the AC. Anything other than that will end up being really inefficient as you lose the ability to control the environment 100%.

It is a little more costly initially to run sealed, which is probably one of the reasons more folks don't do it. But in the long run, it's a much better setup IMO since you don't have to worry about the outdoor climate effecting the room near as much or odor leaks. But to do that, you WILL need an AC, dehumidifier, CO2 setup (with controller that auto doses), a scrubber recirculating the air (or other odor control) and a dialed in setup. If you can't maintain the temps, CO2, humidity, nutes, lighting or any of the other factors 100%, then you're going to be wasting your time with Co2.

After really starting to understand it's capabilities, I have to suggest that it's a more advanced technique than most think, so if you're going to do it do it right and don't cut any corners.

 

[Hydropimp]

Sandman yeah I have read it before on many other threads that every things needs to be at 100%.

Also that is why I was thinking about a big AC so if I can't vent the lights to make sure that the A/C will take care of lght's and be cool enough for the res.

Because of the Ebb and flow or bio buckets and that I will have I am running a bio tube in the closet and I got a sum pump and it giving me hot water but I need to change the pump I have an inline one too. But it was being used at the time of construction. I will be buying the ebb and flow bucket system next week some time to see how the do. I know the bio buckets are a good system but you need a chiller to run them. I don't have the money right now to buy the chiller and E&F so I will go with E&F and make a 8X8 room inside my room which is done already and see what it can do.

 

[Speedy]

In a sealed room, do you need to have your reservoir outside of the room and any air pumps too? I would think this is necessary to have enough oxygen for the roots but is that really a concern?

 

[MTF-Sandman]

No, you don't need to remote the res...unless you can't keep it cool enough. The amount of oxygen it takes is is relatively low (like <10ppm), which is easily obtainable from the ambient air.

 

[WhoAmI?]

CO2 and Scrubbers??

CO2 and Scrubbers??

Do carbon scrubbers reduce CO2 levels? If yes, what's the most efficient way to simultaneously use a carbon scubber and a CO2 system in a sealed room?

 

[MTF-Sandman]

No, they still don't lower CO2 levels if the exhaust point is in the room.

 

[Guest]

The only way to use a scrubber in a sealed room is free hanging with local exhaust,if you exhaust to another room or part of the house there goes your gas.I'm going to do this myself soon.

 

[WhoAmI?]

I was under the assumption that there was no need to exhaust the scrubber air, just to recirculate it in the room???!? I will be using two scrubbers (double filtration). Must I exhaust the air locally?

 

[MTF-Sandman]

Exhausting "locally" is the same thing as recirculating the room air through it...

 

[Guest]

Damn I missed that sandman or I wouldnt have repeated it

 

[WhoAmI?]

Thanks for all the help sandman, I was just confused about whether the air should be expelled out of the room to an adjacent spot in the house or if I can just recirculate it in the grow room (as you said) without disrupting CO2 levels. Anyways, thanks for the clarification!! Respect