Fish Hatchery Liners
The proper choice of a fish hatchery liner is crucial to to the survival of the fish. Fish grade PVC and NSF certified Polypropylene are good choices for fish hatchery liners. Neither of these plastic liners contain algaecides that can harm fish.
The design of a fish hatchery must include enough depth to prevent adverse water temperatures. Designs using fish grade PVC should have a layer of backfill to avoid liner degradation from ultraviolet light (UV). NSF certified Polypropylene can be left exposed.