REEF-D, polyp extension is good. The Blue Face and pygmies don't bother the sps. Pygmy angels in my tank include the multicolor, flame, potters and cherub.
hceiv, I changed my bulbs once after 20 months. Same combo, WHITE-BLUE-WHITE-WHITE-BLUE-WHITE-WHITE-BLUE-WHITE.
dvanacker, still SSB.
spykes, I've never really vacuumed my SSB. I do have a few sand dollars that keep the sand fairly clean/white. Some stringy worm-like critters in the LR come out to play on the sand as well, scavanging for food and leftovers.
Dan