Do you keep those separate? Do the ducks even drink from a separate drinking container if they have their swimming pool? We have a small kiddie pool that holds about 25-30gallons of water and a gallon container of water that is placed in another area in the run. I change the water in the gallon container twice a day and for the pool, I dump it out and change water every other day. Water is usually light brown at this point. We have 2 ducks. Do I need to be switching out the water more often?