Eggs dying

[MySweetChickens]

Alright so im setting eggs in the incubator about 16 and it seems that although temp and humidity are stable (unlike the last batch) im having deaths at day 3 there seems to be no reason for this and have never had a problem in the past yet they die with a watery yolk and blood spots is my incubator breaking on me i have had it for at least 3 years or are my roosters/hens the problem? Is there something they could be eating? Im just wondering if any of you know a possible reason for this or am i just having a stroke of bad luck :/

 

[Poolo]

Have you double checked with a different thermometer? I found out early you cant trust them, my metter on my incubator reads erratically, so i purchased 2 more online with built in humidity, and they also read wrong, them i used my wifes meat thermometer, it read completely wrong also, I finally went to my work van and got my $400 fluke out, set accordingly, and have nevwry had a problem again.

 

[MySweetChickens]

I currently uave two thermometers in there one of which was bought from a petstore and one that came with the incubator the one with the incubator i stupidly ttusted and suprisingly it has read well for quite a while while my one i resently bought has a humidity meter with it and reads the same although i wouldnt be suprised if they are both wrong :/ though im having the same problem with eggs under my broody hen

I should mention the last hatch had the same problem and we are using eggs fertilized by a newer rooster although i dont think you can breed a bird with a lethal gene he is presumed to be a brahama and easter egger cross some of these hens are newer as well though i doubt its the birds that are the problem

I truly appreciate your help and plan on order a few more expensive and accurate thermometers