C02, AC, and Room Help

Hey Guys,

I am running a 1000w hps in a Magnum XXXL. I will be using a 4x4 ebb and flow table with 30 lollipops. I don't have much space as my room is 7x6, and the table will be against the corner so I will only have access to two sides of it.

I am wondering if I should go with a c02 generator, or is this small enough that a 35lb tank will last me a grow cycle? Should I go with water cooled? Propane? Hydrogen? Also see my cooling issues below.

Currently to cool my 1000w, I was using an icebox with a 55gallon resivoir and a 1/4hp chiller. The chiller wasn't enough to cool it, and humidity was through the roof. at 85%. I am trying to find a 3/4hp chiller used, but most likely I will end up going with a 10,000btu portable AC. If I get the chiller, I will also have to get a dehumidifier. However, with the chiller I will be able to cool the c02 generator.

The AC will have to vent the exhaust out through a hole I will put in the ceiling, but will a portable AC vent the c02 out of the room? I can't afford a dual split, so thats out of the question.

Thanks!

Edit: This is a sealed room.

Another thought. If I use the portable AC and keep the room say 65 degrees, my water reservoir should be 65 degrees as well? So maybe I can still use my icebox, but without a chiller to remove the heat from the light?

I would go with co2 burner. Their more effective than tank release because your releasing co2 in its liquid to solid state in a tank but when your convert propane or Ng to c02 it has almost no density and is readily accepted by your plants. Putting an oscillator in front of a tank helps but it is still nowhere near the density of gas conversion.
If heat is an issue for those in ca I would go with a tank or a hydro-gen water cooled burner. if not.. gen-2's are boss
And how much co2 you use is up to you and your conditions. you would not be able to get by a harvest unless you were very conservative with your 35lb co2 bottle.

I have a gen4. I think it's a gen4. It has 4 burners. Propane costs me 40 bucks a wk. My room isn't sealed like yours.
But the effect on flower production was nice. Heat from the burner was mitigated by the size of the area and the cool basement being underground anyway.....hope you don't have any heat probs.

Def use the portable ac unit and the co2 tank. I am in about the same size room and it works great for me. Hope my comment helps. And maybe next grow you can give me info on a flood table as I have never grown hydro before

Todesengel said:

Another thought. If I use the portable AC and keep the room say 65 degrees, my water reservoir should be 65 degrees as well? So maybe I can still use my icebox, but without a chiller to remove the heat from the light?

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If you have the room temp at 65 your c02 will be worthless. Room temps need to be around 85 degrees w/ c02 enrichment.

I'd go with a generator/AC unit as well. I am currently running 20lb bottles but they are a pain in the ass. They are expensive to refill and good luck getting them filled on a weekend or holiday. Not gonna happen. Propane can be bought just about everywhere which makes it much easier to get refills. The generators are also more efficient. I just bought a minigen for my 4x8 tent. Gonna sell my bottles and regulator once they run out of gas.

A 35lb c02 tank would most likely not last you a whole grow. A 20lb tank lasts me about a month in my setup (4x8 sealed tent).

As for will your AC vent your C02? Yes it will, if you get a duel hose portable it won't exhaust as much but it will still draw some of it out of the room.

I have and hydrogen Water cooled paired with a coco digi gro CO2 Monitor and Controller that keeps it at 1500ppm all the time. The rig cost me like 600$ including shipping to my country (very nice deal) and my room is well sealed. I refill my tank once a month.

Banditt said:

If you have the room temp at 65 your c02 will be worthless. Room temps need to be around 85 degrees w/ c02 enrichment.

I'd go with a generator/AC unit as well. I am currently running 20lb bottles but they are a pain in the ass. They are expensive to refill and good luck getting them filled on a weekend or holiday. Not gonna happen. Propane can be bought just about everywhere which makes it much easier to get refills. The generators are also more efficient. I just bought a minigen for my 4x8 tent. Gonna sell my bottles and regulator once they run out of gas.

A 35lb c02 tank would most likely not last you a whole grow. A 20lb tank lasts me about a month in my setup (4x8 sealed tent).

As for will your AC vent your C02? Yes it will, if you get a duel hose portable it won't exhaust as much but it will still draw some of it out of the room.

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Hmmm, I knew that without the high temps and c02 it wouldn't be as efficient, but its worthless with low temps? This adds another equation to the ballpark, as now I must find a way to cool my nutrients with an AC... I was going to use room temp to keep nutrient temps down and to bring out the color in the plants.

But I won't have to use an AC to cool my room to 85 degrees. I can do that with the equipment I have now. Looks like I might stick with a chiller due to the fact I won't release any c02 through the ac and I can cool my nutrients at the same time. But then I'm still gonna need a dehumidifier.... ugh.... what to do what to do... And then I don't know what the c02 generator would add as far as heat goes.

Does the mini-gen have to be on a c02 controller? Or can you set it up without one? I was gonna do the bubble method with the tanks. I won't be able to afford a controller right away but its definitely in my future.

Todesengel said:

Hmmm, I knew that without the high temps and c02 it wouldn't be as efficient, but its worthless with low temps? This adds another equation to the ballpark, as now I must find a way to cool my nutrients with an AC... I was going to use room temp to keep nutrient temps down and to bring out the color in the plants.

But I won't have to use an AC to cool my room to 85 degrees. I can do that with the equipment I have now. Looks like I might stick with a chiller due to the fact I won't release any c02 through the ac and I can cool my nutrients at the same time. But then I'm still gonna need a dehumidifier.... ugh.... what to do what to do... And then I don't know what the c02 generator would add as far as heat goes.

Does the mini-gen have to be on a c02 controller? Or can you set it up without one? I was gonna do the bubble method with the tanks. I won't be able to afford a controller right away but its definitely in my future.

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The plants will still use c02. But not much more than what is already in the ambient air at those temps. So that is why I say it would be useless.

Yes the minigen has to be set up on a c02 monitor. You don't need an environmental controller although you can get one with an integrated c02 monitor for about the same price as a stand alone c02 monitor. I use a sentinel CHHC-4.

The minigen can be water cooled as well.