Oh crap! I cracked my sump!

[Treebeard]

I was trying to get that extra quarter turn on a fitting on the bulk head and cracked it from the bulk head hole toward the top corner of the sump. It's not leaking and the crack did not go all the way to the edge of glass. Will it eventually begin to leak? Is there anything I can do to stop it from going all the way to the edge? The crack is on the end piece of glass on the sump.