Sorry, tanya72806. Grr.
Fortunately, my install people are taking the attitude that the deposit money was theirs and not mine at this point, but I don't want them to have to eat the loss, either. They did put the deposit on a credit card, so they may have some recourse. (tanya--Did you put yours on the CC?) I wonder how long ago they knew they were going out of business. Only a week ago they said that the glass was in the process of being milled. Grr. My install guys had to finally Google the tank builders' neighbors and call them to find out what was going on.
They have a few leads on new people including a local guy who would build it on-site. We'll see. If I went with acrylic, I could get a tank much quicker, but I'm leary of going with acrylic 'cause I'm really pretty bad at scratching things. It would be a lot lighter, too. Sigh.