No matter what size your aquarium, Instant Ocean sea salts and water care products offer the smartest, easiest way to bring to ocean home. Our scientifically formulated sea salts are used exclusively by many of leading large-scale aquariums and research facilities across the country. Instant Ocean HoldFast is for bonding to glass or other smooth surfaces. Use it to bond live rock, slate, plants and coral. This is an easy to use product that is safe for all fish and invertebrates and can be used in for freshwater or marine aquariums. Simply clean and rough surfaces to be bonded, cut or break off the desired amount of HoldFast, and knead the mass with your fingers until it turns white. Then apply to bonding surface, being careful to fill any cracks and crevices (NOTE: you have about 7 minutes before HoldFast begins to harden.) Smooth or sculpt any excess HoldFast to blend with surfaces. This product dries within 30 minutes and can be sanded, filled or drilled in less than an hour. It dries to a natural white color.

• Bonds live rock, slate, plants and corals
• Easy to use
• Perfect for freshwater or marine aquariums
• Safe for all fish