Live rock hitchhiker coral?

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It's nickel sized and purple with bright green specks. Ican see the foot underneath that's attached to the rock
 
The two 55 watt compact t5 bulbs that come in the RSM 130d. They are 50/50 bulbs Would that be sufficient?
 
ImageUploadedByAquarium Advice1391040791.325319.jpg what's this small anemone like creature?!? Ive found 5 or so in the tank of various sizes
 
Aptasia, pain to get rid of. I've tried everything but lemon juice and peppermint shrimp worked the best
 
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