Originally Posted by pickledchicken
Wisher1000 they suggest 85 to 87% humidity in the chart that certainly is not a dry hatch I have never read of the humidity being so high.
Yes, in my opinion, that is way too high. I was at about 20% to 30% for most of my hatch and raised that as much as I could on day 18 with only putting water in the trays in the bottom (stryro bator.) At lockdown, I had it up to 68% to 78% just after I filled the trays but it would fall to below 50% before I filled them again. The RH would shoot up to over 80% when one was hatching. My hatch did fine! None drowned, none were shrink wrapped. I would throw wet paper towels in if I had to open it while the hatch was in progress. The humidity is not that critical in my experience (temp is much more crucial.)
Another suggestion - Have some way of measuring how much water you add at a time and keep a log so you can determine how much water = how many % points it raises = for how long. I have clear tubing that goes to my trays and I use a feeding syringe that is marked in CCs. I just keep a notebook on each hatch with the date, time, what I did, what was the effect.
IE: June 11-day 13, 8:05p, temp 98.9, RH 21%, candled
June 12-day 14, 7:45a, temp 99.5, RH 18%, added 25cc H2O
June 12-day 14, 8:10a, temp 99.3, RH 27%
June 13-day 15, 6:38a temp 99.5, RH 25%, tossed an EE - weeping, 22 eggs in bator
June 13-day 15, 8:50p, temp 99.5, RH 22%
I also make notes of anything else that is happening, candling, eggs tossed and why, etc. Just don't get too wrapped up in this, it can turn into a real chore if you try to keep up with each egg or try to check too often. I try to make a note if things have changed each time I check on the bator. If I check and the temp and humidity is the same as last, I don't bother writing it down. Of course, you need keep track more often the first few hatches and if there is a problem with the hatch rate, but once you have it all stable and have begun to trust your bator, you won't be checking as often. I sometimes skip days altogether (which I DON'T recommend!)
Edited by Wisher1000 - 7/14/12 at 11:54am