After a hurricane came through, my neighbor, who had a fish cleaning table with water supply through PVC lift off and snap the PVC, had this nice geyser in his back yard. He was gone on vacation, so I went over with a valve and a bottle of glue. Opened the valve, liberally smeared glue inside, and slapped it down on the stub of pipe. After a minute, I turned the water off. Five years later, I moved away and the valve was still on the pipe stub.
Sometimes you gotta do what you gotta do. I'd prefer to wait, but I have done it on "shorter notice" and the joint held fine and no fish suffered. After all, it isn't water soluble. And I do run carbon.