Hello everyone! I have three ducks that are getting to big for the small container I have for them to splash around in. I was wondering how many of you that use kiddie pools had a noticeable increase in your water bill from refilling it up every few days. Also, would using pea gravel in their pen and yard help with the mess they make in the water? I have nipple waterers in the yard, a rubbermaid tote for splashing in, a hanging waterer in their coop and a 5 gallon dog waterer next to their food. I have to change out all water daily. Thanks.