Den Braven Aqua Silicone Sealant is a high quality acid curing one part RTV Silicone Sealant. When compared to any other Silicone Sealant curing systems, this Acetoxy silicone sealant offers better adhesion to glass, as it cures under the influence of humidity to form a durable elastic rubber. Aqua-Silicone is a translucent, high strength bonding and sealing system, which is non toxic for fish when fully cured, making it ideal for use in aquariums, terrariums and toughened assemblies.