Laguna Water Basins provide the all-important foundation for your water garden. Water basins are generally easier to install than lined, in-ground ponds since their shape and depth are pre-determined. All you need to do is excavate an appropriately-sized hole. Made of rigid, heavy-duty polyethylene construction, the injection-molded water basins are designed to withstand all kinds of extreme conditions, including heavy water loads, hot summers, and frigid winters, and are guaranteed to resist cracking, peeling, and fading for ten years. They are safe for fish and aquatic plants.