Per the late Bob Fenner, large anemones tend to succumb to bacterial infections easily during shipment. These large anemones often die shortly after they reach the hobbyist’s tank.  In 2016, I wrote an article about my first experience applying an anti-bacterial treatment method on a Heteractis magnifica anemone (formerly known as Radianthus ritteri) prescribed by a fellow hobbyist with a medical background. My first and only time performing it was a 100% success.

I am not sure how much the supply chain practices have improved through the years to mitigate these bacterial infections. Therefore, I continue to perform this as a precautionary measure with any specimen.

Fast forward to 2022: I had the opportunity to acquire another beautiful Heteractis magnifica (aka Magnificent anemone) from a LFS. Magnificent Anemones are more demanding specimens for advanced aquarists so they are not sold as often.  I wanted to document and add a second data point using this method and share the simplicity and effectiveness I have experienced to newer hobbyists.

The 10 day anti-bacterial treatment uses a drug called ciprofloxacin. A definition on WebMD states what ciprofloxacin is.

“This medication is used to treat a variety of bacterial infections. Ciprofloxacin belongs to a class of drugs called quinolone antibiotics. It works by stopping the growth of bacteria. This antibiotic treats only bacterial infections. It will not work for virus infections…”

Procedure:

Refer back to my original 2016 Reefbuilders.com article (<–click on link) for details on the symptoms, materials needed, and procedure.

The only change I made this time was introducing a little glucose and a couple of Lugol’s iodine drops half way through. This was per a 2017 MACNA presentation by Bob Fenner on Anemones and was an attempt to provide additional passive nutrition and disinfectant for a short period, though it should be carefully monitored since you are adding a carbon source which also feeds bacteria and may cause water cloudiness. Perform a 100% water change and disinfect all objects, halt usage and stick with the original process of just daily 100% water changes (note- I use tank water from my existing system), supplying light and good water flow.

Basic setup viewed below:

Treatment Progression

Summary

This second treatment experience has proven repeatable and reliable. It is simple and works great as a precautionary step. Ensure that anemone’s mouth is tight, flesh colors are vibrant, and the foot clings tight to the rock. All anemones will deflate and inflate themselves as a natural process but the mouth should always close up again within 24 hours. If the initial treatment is not successful, extended treatment with a higher dosage may be necessary. These Magnificent anemones truly earned their names and it is up to us to ensure they thrive under our care.