This product has been specially developed in association with Milliput for use within Marine Aquariums. The new formula is also stickier so that it bonds better to wet substrates such as coral frags or rockwork. Its main uses are for fragging, construction of rockwork, protection for tridacna clam bases, repairs of pipe fittings and all of the usual applications. The pack comes with detailed instructions for its preparation and also with hints for specific use within the aquarium. Can also be used in freshwater aquariums or ponds.