GE had change their labeling so it gets to be very confusing. I went looking for it several weeks ago at HD & I see they now have 4 different 100% clear silicones:
GE I Kitchen & Bath - mildew resistant
GE I Door & Windows
GE II Kitchen & Bath - mildew resistant
GE II Door & Windows
None are marked for aquarium use. <The GE tubes now say NOT for aquariums.> And my usual house brand that is marked aquarium safe is no long marked so. I eventually settled on GE I Windows & Door & let it cure for a week. Seems to work so far.
80 gal FW with 30 gal DIY wet/dry/sump.
9 fancy golds, 1 hillstream loaches, 1 rubber-lip pleco (C. thomasi), 3 SAEs, small school of white cloud minnows, planted.