no adhesive is going to say "aquarium safe" when it wasn't designed for that. That's asking to get a bill from a lawyer for ruined floor boards and carpet. Most if not all silicone is inert once cured. RTV 108 is used by pro aquarium builders, but that's not its intended purpose.no, I meant as far as "Aquarium Safe"......typically if it doesn't say so right on the package then it is not