(Pack of 3) Aqueon Silicone Clear 10.3 Ounces each Pack of Three 10.3oz Aqueon Silicone (Clear) Our 100-percent silicone aquarium sealant is easy to apply and waterproof to stop leaks The high strength silicone creates a permanent seal that will not crack Or shrink and is non-toxic making it perfect for use on all aquariums For standard aquariums use clear and Black Seal aquariums use Black sealant