4 Pack Aquarium Silicone Clear Sealant, High Elasticity, Safe for Fish,Fast Curing Waterproof Aquarium Safe Silicone,10 Fl Oz Non-Toxic Fish Tank Safe Sealant,Strong Adhesion

Fish Safety: Aquarium sealant clear is a non-toxic, solvent-free acid cured silicone sealant, 100% Silicone, which is friendly to underwater organisms and protects fish safety.
Quick Curing: This waterproof silicone sealant cures quickly. Apply the aquarium silicone sealant onto the surface that needs treatment, and the surface will dry within 30 minutes. However, for full solidification, it is best to wait 48 hours. Cure time will increase with lower temperature, humidity, and large bead size. The optimal surface temperature for application is +41°F to +104°F (+5°C to +40°C).
Strong Adhesion: Aquarium silicone solidifies under the action of atmospheric moisture, forming a permanently soft silicone rubber with characteristics such as fast curing, high strength, good toughness, and compatibility with most building materials. Cured silicone rubber can maintain excellent performance within the temperature range of -50°C to 100°C.
All Day Elasticity: Aquarium silicone sealant maintains its integrity, does not shrink, crack, or discolor, whether in tropical warm or cold water environments, ensuring that the waterproof seal can withstand temperature changes.
Multipurpose: This aquarium silicone can be used not only for aquariums, but also for other purposes such as windows, door frames, kitchen sinks, bathrooms, cars, boats, pipes, and more