Build It Right: Liners, Underlay, and First Fill
Good construction means fewer repairs and calmer water. Choose durable EPDM or butyl liners over thin PVC, and always lay a soft underlay: purpose‑made geotextile, old carpet without tacks, or thick sand. Tuck generous folds rather than stretching tight. Create a level rim to prevent unsightly drawdown. Finish edges with hidden trenching and natural stone. Fill with rainwater to seed gentle chemistry. If you must use tap water, dechlorinate slowly, then wait before planting to protect delicate, emerging life.