I have a sumpless 29 gallon tank with 2 inches of sand, 25 lbs. of encrusted liverock naturally growing halimeda, lit by two shoplites, and running a reef octopus bh100 T skimmer. The tank has never been treated. I was thinking of getting a couple of magnetic frag racks, along with a 165 watt Marsaqua LED, and using it as a frag tank. Any thoughts, suggestions, opinions on herbivores to have, clean up crew, water change schedule, coral feeding, circulation,or any other pertinent information.