A good skimmer for a 12 Gallon Nano Tank

[snapper1]

What would be a Good Skimmer to buy for a 12 Gallon Nano Tank. ? I have about 8 pounds of live rock and live Sand in it.One blackcap Basslett and a Damsel and a Cleaner Shrimp in it several crabs and Turbo snails.I have checked the Ammonia level there is none, the Tank is 10 days old.I plan on putting in a Flameback Angel Fish in a week or two. Could use advice on what kind of skimmer to buy Thanx snapper1