Hello, Working on planning out my alligator's next enclosure upgrade. Looking to build it about 10'X20', using a large stock pond/trough in the center. Because gators like to splash, the housing built up and around the pond itself will need to be sealed/waterproofed to prevent too much moisture from escaping. Need some good suggestions for animal-safe materials to use for this. Something that is easy-to-apply, and safe for use within 72 hours of application. Some sort of epoxy seal or pond liner paint? Need suggestions for brand/purchase location/etc. Only hardware stores we have nearby are Lowes and Home Depot.