Just my two cents......I have used Oxine to disinfect, and either ACV in their water. ACV is acidic and does seem to keep the water from getting slimy. I did switch to nipple waterers so my water stays clean. Best thing I ever did. I did switch to Chlorhexadine solution to disinfect recently because I have black show birds and Oxine bleaches out feathers.(found that out the hard way) Not a big deal unless you show your poultry. 
