Clear Aquarium Silicone Sealant is a medium modulus, one component, acetic cure silicone recommended specifically for the fabrication and repair of fresh or salt water aquariums. It forms a tough waterproof seal that won't crack or shrink, and is non-toxic to fish when fully cured after 7 to 14 days. Cure time depends on bead size and cure conditions. The vinegar-like odor present during application is acetic acid and will disappear as material cures. Color: Clear. Cartridge: 10.2 fluid oz (302 ml)