What is your humidity levels at? Your going to be running hydro, so you most likely wont have humidity issues once you put your water in the pot and allow the airbubbles to add some humidity.
My tent stays at 50% rh while my house is at 45. I'll include pictures of my buds from today. I have less than 2 weeks of flowing left.
My point, any hydro system that requires water airration won't require a humidifier. You would be surprised how much moisture travels up through your net pot.
If you think you will have low humidity for vegging, you will be fine as long as it's above 40%.
Also give us your rh numbers.
As for you vaccum in the tent from airflow.. My tent sidewalls suck in.. It was the only way I could bring the Temps down lol.. You will be fine
I was doing what your doing, trying to raise humidity before I even started growing.. Some one told me not to even worry about it.. So I removed my humidifiers and will never use one again lol..
Reminds me of a waterchiller..totally Useless. . Lol.. But that's another topic :) sorry if there's duplicate pictures.
My tent has never seen humidity above 55 lol.. Even during veg..
Had I not grown this small king tut strain I would have pulled a lb out of this 2x4 easily. Sorry for the article too BTW lol