First thing first, Zoa eating nudies in a smaller tank are not that detrimental calm down take a breath and then lets solve this. An iodine dip of your current colonies followed by a very in-depth inspection is needed. Check for both Nudies and eggs, the nudies ingest the pigment of your zoa so they can be a little difficult to see. Use a turkey blaster while in the iodine bath to blow between your polyps (With some force) to dislodge any hiding Nudies. After you complete this, every night turn your lights on quickly to check for any extras. If you have the room I would recommend a yellow corris wrasse as these will naturally keep the population down.
Levi
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