That depends on a lot of things. What day are the eggs on? What kind of incubator do you have? What do the instructions for your incubator tell you to do? How humid is the air where you live? What is the humidity in your incubator now?
Here are a couple of threads that will give you some good information: https://www.backyardchickens.com/forum/viewtopic.php?id=48726 https://www.backyardchickens.com/we...et&PHPSESSID=6a9ef75252d048761e502795e39964f4 Hope this helps!
Quote:X2. We moved in April to a much more arid region, and incubating is a whooooooole different ball of wax here than it was when we lived just 60 miles away. Up here where the air is dry, I am constantly adding water to my LG forced air. Conversely, the Reptipro holds the humidity MUCH better & I only have to add about 2 ounces of water to the channels in the bottom tray each week of incubation with about 4 ounces right before lockdown. When we lived in the Valley, I would put water in the Reptipro at the beginning of incubation and not have to add it again until right before lockdown, and the Reptipro would hold it extremely well. It still holds it well, but because this is an arid environment, I do have to add a little water about once a week to keep the humidity around 40%. The LG is a whole different beast. The water channels have to be refilled every other day & new sponges added frequently, and even at that it only keeps the humidity between 30% and 40%. At best, I can only ramp it up to about 55%-60% for lockdown & it doesn't hold for squat out here in the arid mountain country. I'm going to invest in a plastic liner tray for the LG and hope that helps keep the humidity in! So there are a lot of factors involved. The type of incubator, your general environment and climate, the number of eggs in your incubator, they all play a role in how/if you need to add water to your incubator.
