Will Coral Dip Kill Nudibranch?

Getting Montipora Eating Nudibranchs is not a failure of coral dipping. It is a failure to properly Quarantine. Dips(some) will kill the adults but none will get the eggs. You need to scrape or brush away the eggs.

Will Coral Rx kill nudibranch?

CoralRx is effective in removing:

Acropora Eating Flatworms. Montipora Eating Nudibranchs. Bristleworms. ... Red Flatworms.

What will eat nudibranch?

Wrasses like the yellow coris, melanurus, and many others are also good predators of nudibranchs and other small pests.