when we were setting up the 55gl and i said i wanted a tang, i was told (by lfs guy i trust) to put the tang in last...so we added the clowns then the tang...
i didn't know clowns were agressive, (though one of mine is...)
if clowns are aggressive then add the tang first.
in other words i guess i don't have an answer for you and will wait to see if someone else answers. sorry about that