Safe for fish and plants. Easy application. Very low maintenance after installation. Made from space age polymers that are designed to provide long life and excellent wear resistance. Has an excellent bond strength to almost any surface such as concrete, stone, fiberglass, wood and steel. Very impact resistant and is designed to flex when needed making this coating the best option for waterproofing your pond, fountain, or other type of water feature. Is very chemical resistant and can be used in chlorinated environments as well. The perfect waterproof coating for other than water feature projects as well.