Help ventilation

I'm so confused I need a pic

Turbo head said:

I'm so confused I need a pic

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What is your exhaust fan? Although, I also have an oscillating fan in my room, my exhaust fan pulls alot of air through the passive intake...probably all the flow I need. Possibly you too. I did not read how sealed you are but I would also bet you have plenty of CO2. Very little is needed during veg and most ambient air has plenty during flower. I have a pretty tight room and its in an unheated barn that can get down to -20f in the winter. I run my exhaust only 4times a day for 15 minutes during the cold times...adding to that the CO2 coming in when I open the door a couple times a day and I saw no CO2 issues.

But you say you run exhaust 4 times a day. You are circulating and replacing. The whole issue.

hotrodharley said:

But you say you run exhaust 4 times a day. You are circulating and replacing. The whole issue.

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Right, so it is probable that the OPs constantly running exhaust and passive intake are providing all the circulation (and CO2) he needs.

Yep I sure am

Okay so he obviously knows exactly what he is doing and he is doing it all correctly. Maybe stop asking and start giving advice?

hotrodharley said:

Okay so he obviously knows exactly what he is doing and he is doing it all correctly. Maybe stop asking and start giving advice?

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I was making sure

If odor is no problem you should really have no issues IMO. That is THE issue for most people when discussing or considering ventilation. Also, the plants need some vigorous air movement, if possible, to help gain stem strength. This is an issue at the end of flowering. If you are somehow lucky enough to get big bud and the stems are weak they will bow. Sounds like duh but you see pics on RIU of people who have it happen. Then the plant is forced to use life saving maneuvers in an attempt to finish flowering as coded in its genetics. Air and temperature are the two least considered problems by newer growers and they are huge. Colder temps usually equal tighter bud. Higher temps almost guarantee airy and wispy bud.

Suggest reading up on ion generators. My experience with CO2 bags was no real discernible difference in yield but that could be because of ventilation. Better experience using a "K" size CO2 cylinder and regulator and simply running a plastic line to the ceiling that was sealed on the end and holes melted in using a red hot paper clip so that the escaping gas "rains" down on the plants. CO2 is heavier than normal atmospheric gas so it sinks to a low level. Quickly. And fans moving the air don't help the bags.

In Alaska I still had heat issues in a flower room in a basically uninsulated two story house. Just from HPS. So I was forced to open a window during lights on to allow heat out where it was around 0 outside. Adios to the CO2 and that crap ain't cheap, the cylinder is heavy etc. Plus the gas guys, by Federal law, are required to ask about using gas cylinders (I'm using it to carbonate my sodas) but when you get a few refills they are "Like how much soda are you selling here anyway?"

But an ion generator worked no matter what . Window slightly open is even better as it helps keep down the weird oily crap that they make. Anyway I would suggest you read about them. Interesting stuff if nothing else.

Cheap diy co2 system that will help, without hurting your wallet.

That's is genius man

DIY how to & yeast recepie can be found here:
http://www.cannabisknowledge.nl/showthread.php?1908-DIY-Yeast-CO2-(How-to-guide)