I'm not familiar with his plugs, so I can't tell if they're installed correctly, but just for future reference, test them in advance. You can submerge the ends in a bucket of water to look for leaks, and inflate it and leave it overnight to make sure it holds air. Next time maybe do the glue up earlier in the day so you can monitor it. I check on mine regularly for several hours, then shut the box off and go to bed, leaving it to cool until the next day.
Did you cure it with heat or was the glue up done at room temp? If you used heat and your hose held air for the first few hours, it might be fine.