Sand Sifting Starfish / Clean up Crews?

Hi everyone,

I am just getting this tank going and had a quick question here. I eventually want a sand sifting starfish in my tank. I did some aquascaping last night and I will end up getting more rock eventually. This is a 90 Gallon.

That said, with the way I have the rock stacked right now is there enough room for a sand sifting star fish? I would assume they need a decent footprint free of rock?




Also, what else consists of a good "clean up crew" for a tank? Something thats going to clean up stray algae and especially the sand?

Thanks.

 

I picked up 2 from Reefs2Go and find that they stay hidden in the rock work more than any place else. Don't expect to see much of them.