AquaStik - Stone Grey Underwater Epoxy Putty, Net Wt. 4 oz. (114g) Two Little Fishies brings you AquaStik Stone Grey Underwater Epoxy Putty in 4 ounce size and a neutral color that blends perfectly with stone and wood, making it ideally suited for use in and around aquariums, ponds and water gardens, or for building structures in terrariums and habitats for reptiles and small animals. AquaStik Stone Grey is ideal for use in all freshwater and marine aquarium applications. It works on dry, damp, or wet surfaces and even cures underwater! Non-toxic to fish, plants and invertebrates. Excellent for attaching aquascaping items, even to the aquarium walls. Bonds to glass, acrylic, stone, concrete, ceramics, metals, wood and fiberglass. Can be drilled, sanded, sawed, tapped and machined. Hand kneadable and fast curing. Easy to use. No strong odor. Mixes in 1 min., hardens in 20 min. Full strength cure in 24 hours. Convenient single stick format eliminates waste or mis-proportioning of parts. Clay-like consistency affords no-mess application requiring no tools. Packaged in a convenient, attractive hang-tag header with a clear plastic bag and a plastic reusable tube with detailed instructions.