Made of special high-grade polyurethane, this replica is completely safe for your livestock and water quality in both fresh and saltwater aquariums. Ready to use. This coral replica can be placed in the aquarium immediately; there is no curing time. However, Nature's Image strongly advises a thorough fresh water rinse (with cool water, not hot) to wash away any residue from the molding process that might be left behind.

polyurethane, this replica is completely safe for your livestock and water quality in both fresh and saltwater aquariums. Ready to use. This coral replica can be placed in the aquarium immediately; there is no curing time. However, Nature's Image strongly advises a thorough fresh water rinse (with cool water, not hot) to wash away any residue from the molding process that might be left behind. If you have a protein skimmer and the piece is not rinsed thoroughly you may find that the skimmer will become overactive for a short time to remove the residue but this will not harm the aquatic life in your tank. No paints or dyes.