I keep having a lot of blood rings forming in my eggs, and I was wondering if the location of the incubators could be to blame? I have my incubators in the spare bedroom, which also 'houses' the various chicks that I have bought/hatched. Of course, due to the brooders, it is pretty dusty in there. Could this be part of the problem? I have a hova 1583, and 2 LG's, one forced air for incubating, and one still air for hatching. I have been getting many eggs that get to around day 10-14 and then quit, or they go till they move to the hatcher then quit. And of course, there are those that barely even get started and quit. So what gives?