Just finished my hatch in the Hovabator 1588 with 75% humidity.  10 of 12 hatched.  That's 83%.  My best hatch rate before I tried upping the humidity was 25%.  We have a very dry climate so maybe that makes the difference.  I would not have tried this method except that my lower humidity hatches were so poor that this was my last shot.  If I had not had a good hatch from this batch I would have abandoned incubating altogether.  I'm glad I tried this and my chicks are probably glad too. 
		
		
	
	
		
	  Sometimes you have to tweak and tweak until you get it right and sometimes you have to back up and punt.
	
		
			
		
		
	
				
			
	
	
	
	