What you get for your cleanup crew can also come down to personal preference, for instance, I do not use blue or red leg hermits, not only because I am tyring to keep only pacific species, but because they have been known to misbehave on occassion, instead, I used Dwarf Zebra Hermits (which CB Pets tries to keep in stock), or Sam offers as a 'left handed hermit' (I think) from Zen Reef. I have never had a problem with these, and Mark at CB pets feels the same way, they are awesome little crabs, and if you keep them alive and provide good sized shells, they can actually get larger than people think. Electric BLue and Electric orange crabs eat a wide variety of nuisance algae, I loved mine, but one of them was a territorial punk and killed the rest. :( but they are good cleaners, along with halloween hermits as well.

MIthrax, or Emeral Crabs are good at eating the worst stuff, bubble algae, but have been known to pick on fish and inverts. I am trying to get some red mithrax from the pacific through various sources.

As far as snails, each type does something different. Nassarius burrow into your sand bed and stir/aerate this, it's a very important action if you plan on maintaining a healthy sand bed. I have a few super tongans I really like, and there are smaller ones for sale around town as well. Turbo Snails (which is the only non pacific critters I have (2x) are great at gorgin, as far as I have seen, on diatoms and any other film like algae, nerites are good for this too. Trochus which are pacific (look a lot like astrea) do about the same job, not quite as fast, but don't get as large and have the tendency to bulldoze.

Some people reccomend tiger cukes for sand stirring, along with queen conchs, and sand sifting gobies, your cleanup crew does not have to be relegated to the traditional crab/snail mix.

I would highly reccomend getting a donation of live sand from someone here on MAAST, to seed the tank not only with the uber important bacteria, but with copepods, Bristle Worms, and the like. Failing that, you can get some Garf Grunge, or make an order from www.ipsf.com.

Hope that helps.