The eggs are ours and were put in on 6/23 and some 6/25..due to the different dates,there hasn't really been a lock down and the incubator has been opened often. I think the temp has been steady,but the humidity has dropped to 41%!! How can we keep it higher? DH didn't even know that the last few days needed to be 65% until I read it on here and told him.
To begin with, I wouldn't do staggered hatches w/o a hatching incubator, especially when you are first starting out trying to find what works for you. Which LG model is it? and still air? I incubate in an lg. The trick is figuring out your incubator and what works for you. A good share of hatchers that try the first hatch w/out aid from an experienced hatcher have problems simply because there's so much conflicting info out there.
To start with, no matter what kind of incubator you are using the first and foremost thing is having a reliable thermometer/hygrometer. Never trust the gages on the incubators (especially the LG 9300 model) or any thermometer (even brand new) unless they have been checked for accuracy or at least have 2 or more that read in the same range. Having a faulty thermometer can compromise your hatch. (Temps should be 99.5F if you have a forced air incubator and 101-102F taken near the top of the eggs for still air.) Once you know that you have accurate instruments, the next thing is getting the incubator steady BEFORE you add the eggs. Run it a couple days before adding the eggs to get it stable and figure out the quirks. Take this time to see what your incubator's humidity is with it running dry.
Now let's talk about humidity. If you are not in a high elevation or a extrememly arid environment, I HIGHLY recommend a low humidity incubation method for the styro bators, in conjuction with monitoring the air cells for growth to know how to adjust your humidity. This is the method I use:
http://letsraisechickens.weebly.com...anuals-understanding-and-controlling-humidity At lockdown, if you are a meddler (like me) who opens the bator during hatch, you want 70-75% humidity. If you are hands off and leave the incubator and eggs/chicks alone during hatching you can easily get away with 60-65%. The best and easiest way to achieve a higher humidity for lockdown is fill all the wells underneath and add wet sponges to the bator (I put mine right on the screen with the eggs.) Sponges also make it easier to replace and keep the humidity up during hatch. Just pull one out rewet it and stick it back in.
We have to cover turning the eggs. If you are not using an automatic turner you should be manually turning (from one side, then back on the next turn) at least 3xs a day. Most people stop turning at lockdown (day 18 for chickens) but the eggs do not NEED to be turned after 2 weeks.
Lockdown is when you do last candling and marking the air cells (if you are marking-which I also suggest) and remove turners if you are using them, laying the eggs down on the screen and upping the humidity to hatch levels. Many people consider lockdown as hands off from that point. Others of us have a more liberal philosophy about lockdown. Either way, the importanat thing is to let them rest and get the humidity up to a range that is going to work for you. Note:condensation on/in the bator at any point signifies too high of humidity and it should be cut back.
Don't be afraid to try again. I know how hard it is to loose a hatch. My first hatch was compromised by a faulty thermometer and I ended up with one lone chick. With a little extra research and some guidance from fellow hatchers I found what works for me and every hatch since that first bad hatch has been 80%+ with my last hatch being 100% lockdown-hatch rate. There are many of us here that are happy to help and answer questions, most of us welcome questions in pm as well.