My first destructive pest — Zoanthid Eating Nudibranch. Treat with Two Little Fishes ReVive Coral Cleaner (smells like Pinesol, but is made from natural plant extracts – not iodine) for 30 minutes in saltwater (tank water) dip 30 minutes in a bucket. Re-dip every 2 to 3 days to catch next group of eggs that hatch. Total duration is planned for two weeks.
9/3/14 – After 1st dip, lots of dead nudibranchs. Two zoanthid colonies that were dipped, opened 80% the next day (probably only 20% open before the dip).
9/6/14 – 2nd Dip – saltwater, 25 minutes. Expanded to include more zoa colonies. Fewer nudibranchs
9/12/14 – 3rd Dip – saltwater, 25 minutes. Expanded to include more zoa colonies. Fewer nudibranchs from 9/6/14 dip. All corals opened nicely within 24 hours.
Resources for Identifying Pests/Hitchhikers
Hitchhiker’s Guide to the Reef Tank – from RTAW Reefpedia; everything from Chitons to Coraline Algae to Nudibranchs and Spindle weed.
Chuck’s Addiction Live Rock Hitch Hikers – great selection organized by organism type.