Results 1 to 4 of 4

Thread: Grow room fan changes

  1. #1

    Join Date
    Jun 2018
    Posts
    36
    Thanks
    14
    Been Thanked: 94 Times

    Default Grow room fan changes

    Hi guys after recent discussion I'm considering changing my extraction set up.
    I'm currently running x2 4" inlet and outlet fans. Both 100 cubic metres capacity
    I'm thinking of changing the inlet to a 210 cubic metres 6" intake and the exhaust to a 5" 330 cubic metres maximum exhaust fan. I currently run led lights but it can still reach as high as 35 degrees in the room at the minute (loft space with a insulated room built in)
    I'm currently exhaust my inlet from a bathroom vent. I'm after trying to get something to maintain temps as I plan on growing all year round
    Thankyou

    Edit:I forgot to mention the room is 1.4x 1.2 with the roof 1.2m at the highest level (attic space)
    Thankyou

  2. The Following 2 Users Say Thank You to Corblimey For This Useful Post:

    GEORGE (01-07-18), tom222 (01-07-18)

  3. #2

    Join Date
    Apr 2015
    Location
    A Green and pleasant land
    Posts
    16,142
    Thanks
    65,121
    Been Thanked: 66,662 Times

    Default

    Extraction fan always needs to be bigger than intake. This is for you to achieve negative pressure which is a must to create a smell free environment. Have you got a disused chimney you can vent outta of ? Do you have a roof vent ( looks like a lifted slate ) ? Have you got a air brick on the gable end if you have a gable end . Do you have breathable soffits or eves ? Then where are you dragging air in from. Outside or inside like a spare room ?


    Sent from a green and pleasant land

  4. The Following 3 Users Say Thank You to British green For This Useful Post:

    AND (01-07-18), ganja.lad (01-07-18), GEORGE (01-07-18)

  5. #3

    Join Date
    Jun 2018
    Posts
    36
    Thanks
    14
    Been Thanked: 94 Times

    Default

    hi bud apologies for the late reply been a while since I was last on here.
    I've now updated my fans. I have. 6" black orchid 290 m3p/h and a 5" exhaust with 245 m3 per hour. however the exhaust also has a high setting to run 330.
    I intake though my bathroom through an adjustable air vent. when the exhaust is now on low on colder days I just shut the vent and thus far I've had no issues. the intake I've also put a dryer vent flap on so it closes when the fan is not running sealing in the smell

    Sent from my SM-G950F using Tapatalk

  6. The Following 2 Users Say Thank You to Corblimey For This Useful Post:

    British green (15-07-18), GEORGE (13-07-18)

  7. #4

    Join Date
    Jun 2018
    Posts
    36
    Thanks
    14
    Been Thanked: 94 Times

    Default

    also I already vent out of the chimney

    Sent from my SM-G950F using Tapatalk

  8. The Following 2 Users Say Thank You to Corblimey For This Useful Post:

    British green (15-07-18), GEORGE (13-07-18)

Tags for this Thread

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •  


THCtalk.com Disclaimer - You must be over 18 years old to view/use this site .THCtalk.com does not encourage growing Cannabis or possessing Cannabis. Learning how to grow Cannabis instructions should be for educational purposes only. All Information contained in this web site is for: Historical reference, Scientific reference and Educational purposes only. Visitors to this website are advised against breaking the law as It is illegal to smoke, grow, or possess cannabis in the UK and some US States