BTL's geomembranes are made with chemical and leach-resistant materials, making them completely safe for fish and various kinds of aquatic life. There are no dangerous plasticizers found within BTL's geomembranes, unlike other common liners. In industries like agriculture, or food manufacturing, it's essential that all the materials used are safe for contact with human-use products. In aquaculture, and even in your backyard pond and garden, it's essential that the water you use is safe for your fish.
A material that is certified for food-safe applications is rated on a scale of certification. The highest rating, NSF-61, has the most stringent standards for human-use products, and is the standard for potable drinking water. All of BTL's products have been certified NSF-61, and are safe for fish and humans alike.
