Hi everyone. I have 5 Aylesbury ducks in my back garden. At the moment they are swimming in a 6 ft kiddy pool (not even a foot deep) which I change the water once a week. It gets REALLY dirty as you duck owners know. I am wanting to make a pond that is a bit deeper and wider with a pond liner and some sort of filtration system but everywhere that I read tells me that there is too much sediment for a filter. Does anyone have any ideas on what else I could use? What do you use? I don't think the kiddy pool is deep enough and gets way too dirty. Please help me, any suggestions are appreciated. Thanks all!