fish-safe silicone?

[alabaster]

I plan to build a small betta cube (8"x8"x8") out of pieces of glass. Can I just use any type of 100% silicone? Will it be fish-safe as long as its 100% silicone? Why are some silicones safe for fish and some arent?

 

[Tolak]

Some silicones have anti-fungals added to keep them from growing mold in the wet conditions where they are usually applied. The anti-fungals are toxic to fish. Even if it says 100% silicone, it may have some toxic additives. GE Silicone I has no additives, it's what All-Glass uses to seal their tanks, & that is what is in tubes of All-Glass aquarium sealant. If you can't find GE Silicone I, stick with something sold for aquarium use.

Tolak

 

[alabaster]

You mean General Electric right? Thats what I got when I googled "GE Silicone". Does every single type of silicone made by GE contain no additives? Hope so. Thanks!

 

[Tolak]

Yes, GE means General Electric. Only the silicone I contains no additives, use the others at your own risk.

Tolak

 

[chkltcow]

At Lowe's and Home Depot in the section with all the glues and sealants, they have various tubes of Silicon. One is "Dap Aquarium Silicon". There ya go