My LFS has a pair of Watanabei Angelfish that are beautiful and reef safe. My question is can I keep a pair in my 50 cube if I removed all my current fish? Just keep the 2 angels in a 24x24x20 tank? Or too small? LiveAquaria suggests at least 125gal but max size is only 5-6". What do you fish pros think?! Any feedback is appreciated..