Anything will work, but here are some tips.
Hobbyists don't often realize it until it's too late, but it's harder for the cleanup crew to reach frags suspended on eggcrate. Frags sitting on a sand bed are cleaner. The sand bed has two other important benefits.
2- When feeding frags, leftover food also feeds the bugs and worms in the sand. The larvae of those microorganisms feed the coral frags, mostly at night.
3- LS is more than 50% of a reef tanks filtration. Oolitic sand or even just a 1" layer of Oolitic sand underneath larger sand or rubble really ensures that N is kept low enough to grow good coral.
HOB filters are optional but if left out, coral will be able to feast all night.
You could also hook it up to the main tank. If it sits at the same water level, all that's needed for water flow is a pump and a "U" tube. A MaxiJet 1200 would be perfect.
I would only use LR to raise SPS frags closer to the light, which btw, could be as simple as a daylight twist PC in a $6 clip-on cone reflector. Be sure to secure the reflector so it cannot fall into the water.
Edited by Mark Peterson - November 07 2010 at 8:51am