Harlequin, I was just curious what size of tank you'd suggest for a Russells. I suggested a Russells above only w/ proper filtration, as I thought a full-sized Russells would work in a 55g as sole occupant.
I had a Russells reach one foot, and was the sole occupant in my 55g for two years before I moved him into another tank. He was by himself and had no problems, but then again I had a wet-dry and water flow parameters that could service a 125. You've always had great knowledge on this topic, just curious on your thoughts.
That being said, school_sux, with two SFEs in the 55g, I would not add a Russells to that bioload.