About This

FISH & REEF SAFE : Engineered specifically for aquatic life. Our formula is 100% RTV Silicone or harsh that could harm your fish, corals, or plants. Once fully cured (48 hours), it creates a inert,environment safe for both freshwater and saltwater systems.
PROFESSIONAL STRUCTURAL STRENGTH: It forms a molecular bond with glass that withstands massive hydrostatic pressure (water weight). Perfect for building new tanks from scratch (up to 50 gallons recommended) or repairing leaks in large aquariums.
WEATHER-RESISTANT MARINE GRADE SILICONE SEALANT: High-Grade Acid-Curing Silicone Sealant Built to endure extreme temperatures, UV exposure, and humidity, leveraging marine grade silicone sealant for long-term outdoor or indoor aquarium use.Offers superior bonding power for glass surfaces, ensuring a secure and durable seal with reliable aquarium safe silicone that withstands pressure.
FLEXIBLE & WATERPROOF: Creates a crystal-clear, rubber-like seal that will not crack, shrink, or turn yellow over time. It stays flexible to absorb vibrations and thermal expansion, ensuring your tank remains leak-free for years. Also ideal for vivariums, terrariums, and heavy glass crafts.
SEAMLESS APPLICATION：Even first-time users can use it with ease. Cut open the main opening of the bottle cap, install the clog-free nozzle, then make a diagonal cut at the nozzle opening, and squeeze the silicone sealant out from the back to use. (The 12-pack includes a professional-grade caulking gun and 24 nozzle) This waterproof sealant dries in 30 minutes and fully cures in 24 hours. Please use within 3 days of opening the cap.