Aquarium Systems Hold Fast - Purple

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 aquarium water treatment 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. 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.

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