Hi all! I have built (well my husband has!) a pond for our ducks. I have read that muscovys don't need enough water to swim in but seeing how happy this has made them has brought about the problem of how to keep a man made pond clean for them. Plants seem like a sensible option but wanted to make sure that I bought something they wouldn't just want to eat or worse..that could be harmful. Thinking of adapting the pond, it is currently like a raised flower bed. Going to build one side that can be opened to rid us of stinky water and allow it to be hosed out. How does everyone else manage man made watering holes?