Maybe the reply has been made but i will add my 2 cents anyways
thing u need:
Live Sand about 1-1.5in deep
Live Rock this is great in uncured because all of the gunk that falls of will help the ammonia spike and the cycle
filter (my selection of choice AC
Salt mix that is low on nitrates and nitrites as some may damage your tank
heater h2o about 78-83
if possible try to get any media or anything that has been seeded before
Now tank input, a 10G is a bit small bt will do I know some people suggest a 20-30 but they forget that some people have tight budgets, If you do one clown and stick to one clown you will be able to pull it off maybe 2 but no more they grow about 3in doesn't sound like much but it adds up.
last thing that really is a concern the parameters in a 10g are harder to keep than if you have more water, the more water the more safe haven you have incase something bad happens.
I personally have had a 10g SW
reef tank and i can tell u it was the hardest tank that I have owned.