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Incubator humidity too high for duck eggs

Discussion in 'Incubating & Hatching Eggs' started by Primer206, May 13, 2016.

  1. Primer206

    Primer206 New Egg

    Apr 22, 2015
    I have a 4 year old (2012) RCOM 20 PRO incubator that has always worked without any problems.

    I am on Day 7 with 8 duck eggs, temp steady at correct 99.5% , humidity was 45% RH on Day 1 then 55% and now a steady 68-69% for Days 3-7. Manufacturer recommends 45-55% for water fowl.

    I tried to manually decrease %H to 45 % but machine stays on 68%.

    Water level fine so have not added more water today, esp since humidity high.

    When I briefly opened lid, the humidity started to decrease, then increased back to 68% with lid closed, so it appears humidity sensor IS working.

    Is it safe to leave lid opened just a bit to lower humidity, or too risky to control properly?

    Since it is in a controlled, sealed environment, should outside weather cause changes? NY temp has been 60s-76 degrees, low humidity. Room temp about 73-77 degrees F, room humidity 33%.
  2. Primer206

    Primer206 New Egg

    Apr 22, 2015
  3. confusedturtle

    confusedturtle Chillin' With My Peeps

    Apr 6, 2011
    I am new to this as well but I don't think leaving it open is a good idea. The humidity in my Farm Innovators 4200 dropped from the 60's to the 30's when I candled my eggs. It has been about 14 hours and it hasn't changed yet. I hope someone else can be of more help.

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