Crack repair

Can I have a reliable repair this from the outside? Defoamed a couple years ago and really don't want to open the tray up to beef up the backside.

Also I don't have any epoxy left. Will g flex and some glass work? I figured I would grind it out a bit and build back up with glass.

Any pointers? Thanks

Pic.

Yes, it would just bubble out there from the glass you add. Drill holes in the end of the crack so the crack doesn't continue under your repair. I've never used g-flex.