Well, not to get off topic of this thread too much, but I'm condensing to one reef again, and just done w/ wandering BTA's.
A sea of BTA's looked nice in Moberts tank, sounded nice to me, but if they don't help my piccasos color up, AND wander, well, it's time for another option, and would prefer a sand dwellar to at least keep travel/damage to a min.
I've been admiring the Malu for some time.