Upgrading grow tent

I used to use a closet in the spare room to grow, and I hated it , so I got a 4x4 tent , works good better than the closet, I am now expanding to a 4x8
The 4x4 I had heat issues using only 4 inch ventilation, my question is to everyone is , what size ventilation should I use for a 4x8 tent , I thought of getting a AC infinity Cloudline blower with temp and humidity control , not sure how a blower controls heat and humidity, has any one heard of or uses one?

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I pretty much set my fan to whatever setting I need, and leave it. I don’t use the temp or humidity settings.
I would recommend the 8” infinity. I have a 6”, but you want extra airflow if it’s needed. I would upgrade to the 8” when I purchase another.

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In my 4x8 I used a 8in AC infinity T8 and it worked amazing for my tent I would get negative pressure on only setting 2 or 3

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I think 8 inch would be a good choice. allow you to run it on a lower speed much quieter.

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I run an 8" AC Infinity in my 5x5 and it gets the job done with power to spare.

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Awesome I was looking at a 8" but wasn’t sure if it would be powerful enough , I just might try the temp and humidity controller, I’m just not sure how I would control humidity…but I’ll update once I’m up and running and testing it out
Thanks for the advice everyone

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Question! I’m upgrading to. 4x8 tent which I use 4x4 now with 6 inch AC Infinity fan. I’m only putting 3-4 plants in new tent and only going bigger so I can get inside the tent and work without smelling the house up when working with tent open. Is the 6inch going to be enough air flow considering I’m not filling the tent with plants TIA

Should be okay. Negative pressure inside the tent is all that is required to remove smells. It should be enough airflow, for that size. Adding additional lighting will add more heat to the space, and the 8 inch may be a better solution when adding plants.
Most everyone I know uses a 6 inch, or the 8, and the air flow ratings are similar I believe.

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