The 125 is a six foot tank, and my plan is to get live rock established in the 125 so i can move the angel over to it. Currently the angel is only about 2.5-3" so I've got some time. I have also reisgned myself to the fact that I will give the angel back to the store when he gets too big for my system.
Right now the 125 has no live rock, and its a pain trying to keep the water parameters right. I want to put about 130lbs of live rock in it, and I am taking the opportunity of my impending house move to do it.
I want a home for the hippo while the 125 establishes itself, because I've heard they do not handle drastic changes as well as other fish (more susceptible to stress related illness). The water parameters in the 92 are pristine, undetectable nitrates, good ph, etc.
My LFS has coralline encrusted, well established live rock, but I'm still a little worried about a mini-cycle that could harm the hippo. The other fish are pretty hardy, and I dont worry too much about them.