I resealed 3 125s about 2 years ago with ge 1, I let them cure for only a few days and have had no problems with any of the tanks.I've heard ge 2 has a mold inhibitor which would make it highly questionable. I think both ge 1 and 2 say not aquarium safe, so most people will suggest another product. I've also heard they are both aquarium safe if you give them a proper curing time, which I think was between 2-4 weeks. It's not the most ideal product but I've heard it works.
GE 1 does not contain the mold inhibitor from what I've read. That said I've used neither products in the past.I resealed 3 125s about 2 years ago with ge 1, I let them cure for only a few days and have had no problems with any of the tanks.
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It is all you'll find. I think you'll be okay if you give it time to cure, but it's also safer to get something aquarium oriented.Thanks for the tip. This is my dilemma--mixed reviews everywhere I go.