CarlD,

The leak was in a small "finned" area near the bottom of the vessel, in one of the indented areas. What we ended up doing was:

1) Shut the pump off
2) Opened up the pot, the Nature2 vessel, and the valve on top of our filter to let the water drain out of the vessel
3) Dried off the outside of the vessel as best we could
3) Shoved some "Gorilla glue" from Home Depot into the indented area a couple of times (kind of messy, because it drips).

That glue reacts with water, but hardens, and is supposedly waterproof, so we'll see how this works. We let the glue "cure" for a day and then turned on the pump and bled the air out of the system. We'll keep an eye on it for a few days.

If it doesn't hold, we'll probably cut the Nature2 vessel out of the system and replace the cut section with new PVC.

Jim