Reef Construct solves many of the problems encountered during the aqua-scaping of fresh and salt water aquariums. With Reef Construct, rock formations can be safely built, invertebrates with inadequate base fittings can be anchored, and hard coral cuttings can be secured. Reef Construct is a quick-curing, two-part epoxy that can even be used underwater. It adheres to rocks, wood, metal, glass, plastic, concrete and most other material. 2 x 2oz sticks.