Please Help Cracked Tank

[JoshKing]

I just replaced the upper frame on my 75 gal tank because the last one’s brace looked badly damaged. But while waiting for it to cure, I woke up to find this crack near the upper corner. It can be felt by both sides.

Will it be ok to fill the tank if I just keep it lower than the crack?
Is there anything I can do to save it?
Black tape there just for a small diy project I had.

[melosu58]

I would replace that pane.