That tank can be fixed by adding a patch piece on one side or both sides, without removing the trim. I have a 35 with a similar crack I repaired a few years ago, by adding a piece on each side of the glass and resealing the tank. Quite frankly, a hex tank isn't worth spending much money on, and if you have a Big Al's you should be able to get a new one for less than $200. However a couple pieces of glass and a tube of silicone may be worth the effort.
Join a fish club. Don't have one in your area? Start one.