I wouldn't trust it, personally. There are options available that aren't very expensive. Marineland makes a good aquarium-safe silicone, as does All-Glass Aquarium. About the same price, depending on where you go: $5 for 3oz & $10 for 10oz.
My 20 & 75 Gal Journal
Kevin's Planted 40B
Guppy - Endler mixed fry ranging in age from days
old to 1 month old.
Each group will include 20 ...
Complete custom-made aquarium system for home,
office, or business location. This gently used