Fourth failed hatch...what to do? *Dry Incubation Progress*

So I have a hova bator still air incubator with the turner. I got it last December and tried two incubations back to back. Nothing hatched out of about 20 eggs between both settings. The third time I set well over a dozen and only 3 hatched. I was concerned about the first because they weren't shipped eggs. But I didnt stress too much because it was the first time. The second was shipped eggs so I wrote off as a failure with shipping. The third time I was concerned because they were all home grown eggs.

Yesterday was my hatch date for my fourth setting and I've only had two hatched. I've had at least 3 others attempt but they appear to be dead now. I had about a dozen out of 30 eggs not develop. And I know they were fertile. Only two live hatchlings out of the remaining eggs so far. I'm a bit Frustrated and unhappy with my bator. Any advice?

 

I haven't opened any. I'm giving them a little longer in hopes that they pull through but I'll open a couple up and see what I can find. I'm not going to lie... It freaks me out a little to open em up. I'll take pics and Post them either today or tomorrow morning.

 

I'm definitely hoping for better hatches! I'm so irritated about it that I'm on the verge of giving up and buying a different type of incubator. I'd like to try and figure this out though instead of spending more money.

 

I set a variety. I had wyandottes, orpingtons, and silkies. The silkies, I know a couple weren't fertile but the rest should be because I just had some hatch from the same hen and roo when she went broody. Im pretty sure the wyandottes are having fertility issues but that's only because I haven't seen the roo ge the job done. The orpingtons appear to be the only things hatching. I candled right before lockdown and the few that were clear were from a different silkie pairing that I believe needs the fluff trimmed. The rest of the silkie eggs had blood rings. All the other eggs went into lockdown because they were completely dark. I'm miffed as to why no more have hatched.

 

Quote:1) My temps have been the best this last setting. Staying at 101 and humidity stayed between 50-60 the whole time. At lock down it's been just under 70.
2) I usually use an all purpose cleaner. Something with bleach. I take it outside scrub it, rinse it with the hose and let it air dry.
3) Would the bleach be doing that? Someone on here told me once that bleach was ok, because I was asking if the fumes would mess things up.
4)It is in a room with the door closed at all times. The only person who touches the bator is me when I'm checking temp and humidity. I have it sitting on a trunk so it's not shaky.
5)Again, I'm the only one who opens it. And that's as infrequently as possible.
6) All very healthy, I and my neighbor raise the birds so I know they are in good shape. I can't really speak for the eggs I had shipped.
7) They aren't handled often at all. I collect them and put them in the bator with bare hands. I usually candle a few throughout incubation and then candle right before lockdown.
8) Haha, yes, large side up! You're right ya never know!