This professional silicone sealant doesn't contain a fungicide meaning it it is safe for use with fish and reptiles. This makes it ideal for use in ponds, aquariums, terrariums and vivariums. One part Acetoxy Cure Silicone Sealant which cures on exposure to moisture vapour to form an elastic silicone rubber. Safe for use with fish and reptiles Ideal for pond, aquarium, terrarium and vivarium use Translucent - Drys clear Ideal For Most applications including, glass to glass joints 310ml tube with nozzle Fits into silicone cartridge gun