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Ventilation is key to producing good buds and you want a high powered fan to change the whole room's volume in less than 5 minutes on a big carbon filter. Such fans are powerful (therefore really noisy) to exchange such volumes and pull through the carbon. So when you drywall the room put in sound insulation and in the ceiling too. Sound insulation looks like rockwool slabs. Hand saw cut with a carpenter saw. Build a door with an extra depth to take sound insulation. Run rubber strip on the door jamb so gaps are sealed to stop noise. You want no noise leak at all to be heard outside the grow from fans. Test by checking sound at 4 am when it is dead quiet outside!

If you opt to an NFT table (and you should as they rock) take advantage of the gaps between the channels. Go get some 10 inch PVC pipe and cut slits on one side, bung an end cap on one end and a fan to blow into the pipe on the other end. Place this under the table on a frame to blow air up through the crop. Add in corner fans too to blow air over the crop canopy.

I can't stress enough the importance of air movement and room exchange as critical to good bud. Too many grows have insufficient ambient movement and extraction. Poor airflow will result in mold all over your buds in the last 2-3 weeks as they go into calyx swell. Avoid by having big airflow.

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Mr. Alien said:

The guys on growery say that I can't have like a tent inside a room with air conditioner. That i need to exchange stale air for new air too, like with mushrooms. So that I need an inlet fan in the room. Ok, I can't make an inlet fan hole in the room, it just looks more suspicious and I have little nephews coming to my room and playing xbox and shit, girls comes too and friends.

So, I have this room that is in my Bedroom. Is empty.



Air conditioner pointing right in front of the empty room



the room





My bedroom is really big and has big windows



Can I just put the growing tent in that room with the door open and the air conditioner pointing at the room? Then for air exchange i just open the windows a few time per day and turn on the ceiling fans. Then if i just have a visit a little nephew or something i just close the door of the room until he's gone.

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13shrooms said:

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Can I just put the growing tent in that room with the door open and the air conditioner pointing at the room?

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for sure

I put a tent in a room with one window with a/c in the window..  as long as the temps are effected by the a/c you can put it where ever you want

the air exchange thing is easily handled by opening the door to the room every so often.. 

thats how I grew for the 1st 2 years with soil buckets

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phychotron said:
You want fresh carbon dioxide pumping into the room the plants are in.

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phychotron said:
Fresh air contains more CO2 than air that the plants have used.

Plants are mostly carbon, they get it from the air, not through the roots.

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Kush_Zombie said:
How did you go from thinking that putting a hole in your ceiling was a bad idea to wanting to cut all the way to the roof?

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phychotron said:
You'll need to control the humidity and temperature in a sealed room. Even with LED a sealed room will heat up.

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Kush_Zombie said:

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