I have a flock of chickens + 2 ducks and currently, their water source is some stagnant water in one of those oval stock tanks. The water is rarely changed or topped off except for when it rains. I want to put some better water out for them and I've heard of those container ponds so I'm thinking about turning the stock tank into a small pond with some fish (because there is also a rampant mosquito problem) but I've heard that bacteria can get in there and cause some problems for the animals that drink it. If I turn the stock tank into a pond, will the water be better or worse than just stagnant water? PS no animal on my place has died as a direct result of the water as far as I'm aware
Picture below is what the stock tank looks like right now
Picture below is what the stock tank looks like right now