Humidity For Incubating Chicken Eggs (First 18 days)

Discussion in 'Incubating & Hatching Eggs' started by AmazingRachel, Mar 26, 2017.

  1. AmazingRachel

    AmazingRachel Out Of The Brooder

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    Hi all,
    I'm hatching chicks for my 4-H Embryology Project. I've got a (used) Hovabator 1602N with a fan and 32 eggs with a Little Giant automatic egg turner. I read the instructions that you're supposed to fill the center trough for the first 18 days and then the next outer one for the final 3.
    I've read that it is supposed to be at ~60% humidity for the first 18 days. The center trough is filled with warm water and the incubator is keeping at a steady 100 degrees (the Hovabator cycles between 98.5-101.5), but I have two digital hydrometers that are reading about 50% relative humidity.
    I've read (here: http://incubatorwarehouse.com/getting-started-egg-incubating) that the humidity can be anywhere from 25%-60% for the first 18 days. I've also found threads on here that have their humidity at 35-40% with good hatching results.
    Is the 50% humidity in my incubator ok?

    Also, I attempted to make a wet bulb thermometer but it steadily said that it was 75% humidity. It had a thick metal casing, could that have anything to due with the false reading (http://www.tractorsupply.com/tsc/product/producers-pride-brooder-thermometer)?
    I made a wet bulb thermometer last year where the thermometer was against a thin sheet of plastic (came with the hovabator) and I got accurate readings.
     
  2. feedman77

    feedman77 Chillin' With My Peeps

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    I prefer 20 to 35 during incubation.
    Then raise to 70 for hatch.

    I prefer to be drier during incubation.

    If I try for much over 45 during incubation I will have formed chicks that don't hatch and drowned when they pipped.

    Try this round where you are. At if you don't get the results you want try drier on the next one.

    Humidity is really dependant on elevation, humidity in the air and your house.
     
  3. PD-Riverman

    PD-Riverman Overrun With Chickens

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    Conway SC
    You do fill the center one for the first 18 Days Then the center and the next one for the final 3 days. I am in SC, I want my humidity at/around 35% for the first 18 days then around 75% the last 3. Some say Location changes all that----I never lived anywhere else so I have no experience in other locations. I did help a Lady in Canada that has Nice hatching equipment but a very low hatch %---she follow my instructions and now she is running in the high 90----96% last hatch with close 200 chicks.

    If your humidity is to high with only the center one filled---then you need to make the center one have less water surface---a smaller container set in the middle one---or some flat rocks that are a little taller than the water level ---anything you got to decrease the water surface. If what ever you use goes below the water surface then it will not lower the humidity. Some even use them the first 18 days with no water as long as the humidity does not get to low.
     
    Last edited: Mar 26, 2017
  4. AmyLynn2374

    AmyLynn2374 Humidity Queen

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    Gouverneur, NY

    :welcome

    This is my answer for the humidity dilemma: http://letsraisechickens.weebly.com...anuals-understanding-and-controlling-humidity
     
  5. AmazingRachel

    AmazingRachel Out Of The Brooder

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    Mar 10, 2017
    Westchester, NY
  6. AmyLynn2374

    AmyLynn2374 Humidity Queen

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    Oct 11, 2014
    Gouverneur, NY

    You're welcome.
     

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