Question with humidity

Discussion in 'Incubating & Hatching Eggs' started by KDbeads, Sep 21, 2009.

  1. KDbeads

    KDbeads Chillin' With My Peeps

    Aug 20, 2009
    East Central VA
    I'm on lock down, yesterday I sprayed the inside of my incubator (homemade!) with water and made sure all the water dishes were full. Humidity hit 65%, right where I wanted it to be. But after 4 hours it was back down to 45% [​IMG] I added my only sponge but NO change after an hour so I then added 2 rolled up damp washcloths. After only 5 minutes I had 100% humidity! Removed cloths and sprayed the inside surfaces of the bator. Back to 70% after about a half hour . Ok.... great I left it alone until hubby gets me this morning.... back down to 45%??? I add back one damp cloth... Almost 80% within 20 minutes so I decide to live with it. So far it has stayed steady for 4 hours.

    What do you think the issue was? Too much air flow? Not enough porous surfaces? And why would just one cloth keep the humidity this high?

    AGAIN, HOMEMADE INCUBATOR!! It's on my BYC page, but I do have 12 1/4" 'air' holes, that's not mentioned on the page. Not all are fully open, 2 have wires or tubing going through them.

    Thoughts?
     
  2. Cherlyn

    Cherlyn Chillin' With My Peeps

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    Feb 24, 2009
    Alconbury, England
    That is a lot of air holes. Sounds like that might be a major issue. Do you have any heat sinks, as well?

    ~Cherlyn
     
  3. KDbeads

    KDbeads Chillin' With My Peeps

    Aug 20, 2009
    East Central VA
    6 sand filled heat sink. No problem with temp fluctuations.
     
  4. shelleyd2008

    shelleyd2008 the bird is the word

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    Sep 14, 2008
    Adair Co., KY
    Put some wet sheets of paper towel in there underneath a sponge. The towel will raise the humidity and the sponge will keep the towel from drying out too fast.
     
  5. KDbeads

    KDbeads Chillin' With My Peeps

    Aug 20, 2009
    East Central VA
    I do have paper towels down, I can't figure out why the wet sponge wasn't keeping them moist last night and the rolled up rag is today... gee, where's a scratchy head smiley when you need it?

    I'm afraid to close up any vent holes but I'm thinking the air exchange rate is too high....
     
  6. Cherlyn

    Cherlyn Chillin' With My Peeps

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    Feb 24, 2009
    Alconbury, England
    12 air holes should be plenty! I would close several of them and see how your humidity fares.

    ~Cherlyn
     
  7. shelleyd2008

    shelleyd2008 the bird is the word

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    Sep 14, 2008
    Adair Co., KY
    My 'bought' incubator has about 12 air holes, but most of them are smaller than the diameter of a pencil. The two on top for ventilation are about the size of a 'big' crayon.
     
  8. Cherlyn

    Cherlyn Chillin' With My Peeps

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    Feb 24, 2009
    Alconbury, England
    Quote:Yes, the 1/4" size is what concerns me - that is an awful lot when you have 12 of them.

    ~Cherlyn
     
  9. shelleyd2008

    shelleyd2008 the bird is the word

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    Sep 14, 2008
    Adair Co., KY
    I would cover most of them, and leave 3-4 along the bottom and also along the top. That should be plenty of air flow.

    ETA: Play around with it by covering some of them partially with tape, until you get the towels to stop drying out so fast [​IMG]
     
    Last edited: Sep 21, 2009
  10. KDbeads

    KDbeads Chillin' With My Peeps

    Aug 20, 2009
    East Central VA
    These holes are big enough for a pencil to fit it, that's 1/4", which is how I made them [​IMG]
    Ok.... time to start taping up some holes [​IMG]
     

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