Don't worry about me Phong. I don't think they live on zoas either, and I dip and blast everything in strong TMPCC before putting them in my tank, including the two frags from you. Just to be sure, I went downstairs with my flashlight just now and inspected all my millies and Valida (AEFW love them the most) for 10 minutes, and did not see a trace of any bug

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I read somewhere that wrasses (such as 6 line) will help controlling the pests, even though it might not totally get rid of them. From reading on RC, fluke treatment and TMPCC seems to be the best. Since your tank is still pretty new, it should not be too difficult to pull the corals out for treatment, even though it will still be major headache

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