The standard treatment for cracked glass is to replace the pane.
I have read about people sandwiching a bottom crack with 2 pieces of glass (full length front to back & maybe 6-10" wide) siliconed over the crack. The justification is that old tank are made with 2 pieces of glass at the bottom joined this way. I can't find the link at this point. However, I would not be trying this on a 130 gal
without some good evidence that it is safe. You might want to consult a pro (look for custom tank builders in your area).
80 gal FW with 30 gal DIY wet/dry/sump.
9 fancy golds, 1 hillstream loaches, 1 rubber-lip pleco (C. thomasi), 3 SAEs, small school of white cloud minnows, planted.