I just ordered some clippers from Boston Aqua Farms to trim back a couple Acropora colonies.  I've never trimmed SPS with clippers before ... I was curious if there were any techniques, or things to keep in mind when I go to town on those Acro's! 
  Do you frag in the tank, or outside the tank?  I am thinking of taking the colony out of water for fragging to have more room and access to certain branches.