I have 2 Pekin ducks and as you may all know it's already Summer! I have their little pool and change it every three days. I was wondering if it's okay for them to drink their own "waste" from the pool It sounds nasty but my ducks do it everytime they get thirsty yuk! They have their fresh water but decide to drink from the biggest "supplier" Also, since it hit summer they start getting hot, obviously, and when they rest they breathe heavily, like huffing Is there any way to keep them refreshed or up n running so they don't sleep all day?! Any help is greatly appreciated thanks!!