I didn't know you meant 4000 gallons! It's a good thing your husband removed the splinters at least! Is your duck doing okay?Yes. I have a 4,000-gallon pool so, I can't really dump it. It has a waterfall so it filters and the water never turns black. My husband removed the splinters. He thought we should wrap a bandage around it. So we did. The bacteria was on the rocks.