GE's Silicone I: GE012A
Well for those of you worried about using GE's Silicone I here's some feedback from Momentive Performance Materials, GE's silicone rubber supplier:
It is not a product we recommend for aquarium use but have heard people
have had success with it.
Matthew A. Brown
Momentive Performance Materials
fax 304-746-1654 "
From the other information I've gathered you should also let the silicone cure for at least a week before submerging it. Well that's about it.
I found this part funny though:
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