Foam 'bator running TOO DRY?

Discussion in 'Incubating & Hatching Eggs' started by BlazeJester, Feb 28, 2013.

  1. BlazeJester

    BlazeJester Chillin' With My Peeps

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    Aug 2, 2011
    Midway, GA
    Hi. This is my first try at incubating. I am using the renowned and beloved ([​IMG]) LG 9200 still-air with an egg turner and using the dry incubation method. Here's the deal.

    The incubator is sitting on the top rack of a 2-shelf mesh shoe rack, about 12" above the surface of the dresser. Plenty of opportunity for air flow. There are no plugs in any ventilation holes.

    When I stabilized the incubator before setting eggs, the humidity was low. Super low. 16% low. I am using an Accurite thermom/hygrom. I only had one at the time and have since purchased a second to double-check accuracy. They read exactly the same for both humidity and temperature. The room itself is a bedroom with little traffic and is constant temp at 68-70 with humidity levels of 30-36% over the past 24hr (and the past week, I've been keeping an eye).

    Because of scheduling the hatch date I had to set on Feb 21 before I got the humidity issue worked out. The temperature was and is reading steady at 102*F at the level of the top of the eggs (100 in some places). I placed a pan of water on the shelf underneath the incubator (5" clearance) to catch drips and hopefully evaporate into the incubator to get the humidity up, but that hasn't happened yet.

    I set 28 of my uncle's eggs (30 hens under 2 roos, untested fertility but all eggs I've cracked have been fertile). Today was candling day, Day 7. I found blood vessels in 8 eggs and cannot see into 4 others. The rest all look about the same, with a dark mass toward the top (big end) of the egg and a very dark ring about halfway around. I can't tell if this is just a different stage of development or if they have gone bad.

    I sacrificed three eggs that were questionably dirty. Two had burst yolks, one was intact. One of the burst yolks appeared to have blood in it, but not a blood "ring". The other did not. The intact yolk did not appear to have been fertile.

    My questions:

    What is this dark mass and dark ring a sign of? Too hot? Too dry?

    It is possible for humidity to be too low. Should I be refilling the wells before it hits 25% to prevent further excess moisture loss?

    What should I be looking for at the next candling (3 days out) to confirm that the eggs are "dead"? If uncertain, should I leave them or pull them? I don't want to damage the few I'm sure about.

    Is it possible this is a temperature issue? Is 102*F possibly too hot in my incubator? Try as I did, I was unable to land a mercury thermometer to calibrate the electronic ones. The Accurite units do not tolerate boiling or freezing temps so manual calibration was not an option.

    I appreciate any feedback you've got time to share. I know this is a busy thread and this is probably a common question with this incubator, but I couldn't seem to find the right answer.
     
    Last edited: Feb 28, 2013
  2. ozexpat

    ozexpat CocoBeach Farm


    sounds like a blood ring - bacterial issues with egg

    my humidity is 19% ON DAY 18 - LOCKDOWN AND INCREASE TO 80% TONIGHT

    read this https://www.backyardchickens.com/a/hatching-eggs-101

    good luck
     
  3. BlazeJester

    BlazeJester Chillin' With My Peeps

    1,276
    12
    141
    Aug 2, 2011
    Midway, GA
    So humidity at 16% is not a problem? Or yes?

    I will sacrifice more eggs on Sunday at day 10 - I believe most are that ruptured yolk. However? I'm not at all clear on why this would happen with eggs that I picked up and transported myself less than 100 'mi? Are there super special requirements? I had the the car warm (70+) and drove them straight to the incubator afterward.

    Any suggestions are appreciated!

    Eggs were not washed before incubating. All "dirty" eggs were discarded as soon as confirmed
     
    Last edited: Mar 1, 2013
  4. ozexpat

    ozexpat CocoBeach Farm

    when it gets that low I will put a pill bottle or two with water in it (others use mini glad containers on their side, with a slit in the lid). they fit nicely next to my turner. it bums it up to mid 20s or 3 days
     

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