I hope to catch the bowing, the dripping leaks, and small puddles before all out break and flood. I guess I am willing to chance it.

I am confident that the rim does very little structually when there is no center brace. I guess I will figure out if I am right or wrong though huh?

If worst comes to worst I have a CAD file of a one piece acrylic top cap to "I" beam that can always be attached at a later time.

Oh yeah one update.....Omar the chemist from Ecclectic adhesives called be back after running some specific test for salt water aquariums. He wanted to let me know that they will be updating their MSDS to reflect marine applications.