Hi all, I have a very small garden and at the back of it my two khaki campbells have a small plastic box as a pool (40W x 60L x 22H cm. I'm thiking of having it 3-4 times as big). I am getting new grass and soil soon because I only have muck now. What beddings are best for ducks in wet climates? While that's going on I am deciding to get a filter system for the new pool, but I don't know which one to get. Any ideas? Thanks!