Best Aquarium Seal
Permatex 81781 Black Silicone Sealant
Permatex
RTV silicone is the standard material for aquarium seams - used by all aquarium manufacturers
- RTV silicone
- Aquarium safe formulations available
- Waterproof
- Flexible
Pros
- RTV silicone is the standard material for aquarium seams - used by all aquarium manufacturers
- Flexible cure prevents joint failure from water pressure changes
- Waterproof permanently - the only correct choice for water-containing glass structures
Cons
- Not clear - black or white only
- Requires 24-48 hour cure before water contact
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