I can't vouch for the reliability of that, but may try that on a very small seam leak. If I do, I'll report back.

By the way, when resealing, people will use everything from C-clamps to duck-tape to hold the glass close.

One 125-gallon tank with a seal leak was turned on its side and that seam was re-sealed. A couple of buckets with gravel were set on the outside to hold the glass close! That sounds pretty tricky in itself.

Wraith, you also mentioned the possible need for a frame or clamp holding the two long sides of that tank together? Often that is absolutely essential. I recall someone having to do that with a commercial tank, where the plastic on top had broken.

I also picked up a 40-gallon tank from a friend who was moving across the country. It must have been one of the first made. He had fashioned a heavy duty plastic bracket to hold the sides together. When the kids were away, I tried filling that tank up with a hose and was shocked to see the sides visibly bowing out before the aquarium was half full! I never have moved so fast for a python tank filler/ drainer to pull the water out of there!

The brace doesn't add to the visual appeal of that aquarium, but I would never set it up without the brace or there would be glass shrapnel flying all over the room!

You may be very well served to fins some sort of clamp or middle bracket for that aquarium. Even if it originally didn't have it, as it ages, that would be an important nod to safety.

I put the tank on the bottom of an over and under stand. Discovered that one could spray a shop light (outside again) with a flat black enamel. It was hung from the top of the rack. Two tiny holes were drill in the lower side of the angle iron and S-hooks were inserted there, so the chains to the lower shop light could be secured. If you can plug such a non-aquarium light into a GFI outlet, that would be wise. Heck, it is wise to do that with all aquarium equipment, if at all possible!