crazing

Hello I have this 100 gallon plexiglass/acrylic aquarium that I fixed up a couple of years ago. It was really scratched but sanded it down. I didn't go crazy on the sand down but enough to get the small scratches out. When I was sanding I couldn't really get these smaller ones out but to find...

I have a 100 gallon tank, 60x18x20, brand is clear for life. I just noticed theres a big crazing located at the bottom on the side of the tank. Is this a huge red flag? There is also a few bubbles at the seams. Thanks