GE Silicone I is an acid hardener, i.e. acetic acid (vinegar) is the hardener. That’s why you smell like vinegar. GE II silicon polymerizes with ammonia, which means that ammonia is hardened. Silicone I takes 24-48 hours to harden.
GE Silicone 2+ Sealant is a so-called neutral cure silicone, which means no acid is released during curing (as with GE Silicone 1 Sealant).
Aqueon silicone sealant is made from 100% non-toxic silicone. It is very easy to apply and creates a permanent and very strong seal to stop and repair leaks. It will not crack or shrink over time and because it is non-toxic once cured, it is safe for all aquariums and fish.
I think the real difference is the acid it creates as it cures. Aquarium silicone uses acetic acid to cure, some of the other types use a different curing method I think. So any silicone that says it has an acetic acid byproduct should be safe.
Acid Cure: All-purpose silicone (GE Silicone I) turns out to be an acid-curing silicone: it contains acetoxy, which gives off a strong ammonia smell when it evaporates and hardens. This type of silicone is NOT recommended for use on masonry, brick, stone, vinyl, plastic, etc.
about 24 hours
Silicone I is made from 100% silicone (the same silicone used to seal aquariums) and works just as well when used correctly. I used it on my tank with no leaks or issues, so yeah that’s fine.
Wear gloves to protect yourself. Use a utility knife or razor blade to cut the frayed silicone gaskets. Spraying water on the seal will wet it and loosen it, making it easier to cut [source: Carter]. Prepare a mixture of flour and water after removing as much sealant as possible.
Re: Removing the unwanted GE II silicone So in addition to the razor, I lightly dusted with bleach to prevent recurrence and highlight the rest. The silicone can also be removed with a rough cloth with white steel wool or even 0000 (obviously not suitable for all surfaces).
The best selection for the best shower or tub seal BEST FOR BIG JOBS: Gorilla Silicone Sealant Caulk. BEST FOR SMALL JOBS: Red Devil DuraGuard Acrylic-Silicone Sealant in kitchens and bathrooms. BEST FOR MILDAY PREVENTION: GE Silicone 2+ Kitchen & Bath Kit. FAST AND CHEAPEST: DAP acrylic latex gasket with silicone.
Although freshly applied silicone can be applied and glued over old silicone, the bond is not as strong as on a clean surface.
As I said, all 100% silicones that do not contain anti-mold additives are fine. Local hardware stores usually carry the DAP brand and offer a 100% silicone and aquarium safe product. Make sure you use silicones that do not contain mosquito repellents. It is not safe to hold water.
According to the FDA. 100% silicone is safe for food contact, although I trust the FDA as much as I trust a ■■■■ crack.
Test of silicones that can dry under water Now that this is done, it’s time to let it sit for 24 hours, which is plenty of time to completely complete the silicone process. So the answer to silicones that can dry out under water is YES.
Superglue is safe for aquariums as it becomes completely inert when wet or wet. Gorilla Gel Instant Glue can be used as an aquarium glue.
Loctite Clear Silicone is a versatile adhesive and sealant that forms a waterproof protective seal ideal for metal, glass, rubber, tile and porcelain. It is designed for indoor and outdoor use to repair everything from electrical connections to boot seams to stop leaks in rainy weather.