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  1. S

    too much negative pressure

    fso heres pictures sorry i couldnt get them up earlier i could not upload them from my phone.
  2. S

    too much negative pressure

    I've taken the HEPA filter off and it makes no difference. I am also trying to keep my grow room clean also so I would like to use it if possible
  3. S

    too much negative pressure

    Apparently I didn't write correctly or clearly My Fan is 8 in inline fan pulling 371 cfm not 1300. my HEPA filter is 6 in rated for 1300 cfm. All my duct in is 8 in. 1 exhaust and 2 intake all 8in. Ducting.there is a wye at the hepa filter which is also 6 in(6 in wye with two 8in reducers) if I...
  4. S

    too much negative pressure

    I have a 8in inline fan hooked to my lights inside the tent blowing air out of the tent. The fan only runs 471 cfm. I also have two 8 in ducts coming in from my HEPA filter from outside. The filter is rated for 1300 cfm and is 6in. I have so much negative pressure the tent is getting sucked in...
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