A while ago I got some ducks for the first time...Been learning a lot. I was thinking that I would keep them with the chickens, and with that have had to make changes with the chicken's set up, trying to find what works best for both. I leave the waterer in the coop like I always have, where it remains clean. And I set a gallon waterer out for the ducks twice a day. The ducks have a pool in which they do their "thing" which turns perfectly good water into filth in no time. For some reason, I keep catching my chickens drinking from this dirty pool when they have clean water. I don't clean the pool everyday, every couple of days. I am worried that this will make them sick. This can't be good for them. Do I need to separate?