The sucking in is negative pressure. Its drawing the air in the tent in quicker than its port allows. It will stretch on the tent walls and threads over time. Cheap made tents or old ones will begin to come apart. I get mine to where it starts to pull in then back off. I have 2 tents both with an intake only. Draw fresh air into bottom port then i have the fan just sitting vertical in the top port. I pull heat from lights to exhaust immediately. I have heat issues so I run lights at night, exhaust the heat and pull in fresh air. Of course im pulling in humidity too so i have to run a dehumidifier.
The 8 inch vivosun outline fan has a carbon filter, which is well needed lol but like I said when we had a 8 Inch inline to match it and it was puffing out badly, then when I introduced the 6 inch inline fan on the slowest mode , it quit puffing out and is barely sucking in at all, hardly noticable do you think that’s fine?
I think it should be okay the way you have described it. Sounds like you got it to balance out.
New problem lol
First off, we are only using half of the 4x8
5 gal pots filled with:
Happy frog soil on top, ocean forest on bottom
Extra pearlite
Extra worm castings
Grow dots extended veg formula(slow release nutrients)
We are 3 weeks in from seed in pot
Lesves have a discoloration, im wondering if it’s a ph issue and I was afraid to water until the 5 gal pot had runoff because the roots aren’t fully developed yet… what do you guys think??? About to send in a picture
Yellowing on the outer side of the leaves
Looks like a potassium deficiency 
@Growdoc , @Budbrother , @OGIncognito , what do you think?
Also here is a link to my personal grow!
It does look like potassium deficiency, runoff numbers would confirm. Good ey Kap!
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At the Learing center in MN 
How often are you watering?
Temp is 80 consistently so watering every day lightly, probably every 2 or 3 days watering the center
Might be overwatered? At that size i water just a ring every other day.
Looks more like nutrient burn than K. Is there a better pic? New growth looks fine. Has it spread over the weekend?
How can you tell the difference please? I’d love to learn 
Age of plant is an indicator. The burns don’t just stick to margins and have gone between veins. Hard for me to see more than the bottom leaves with the flash washing them out for my eyes.
Will send in more pics later! Thanks for the help guys!
Around what time/age in the flowering process will a potassium deficiency starts to show? If you don’t mind me asking Sir.