Magnifica Update
The anemone continues to do well in the cipro treatment. It moved its foot a little higher on the rock, suggesting it is liking the light and I upped the light time.
Because of my availability to do stuff, and how the anemone is doing, I have substantially altered the original protocol posted by OrionN.
Day 1
10 gallons new salt water with 25 mg/gallon cipro. Lighting of 270 par with refugium bulb for 4 h per day. There has been no water cloudiness any days.
Day 2
100% water change with 10 gallons new salt water with 25 mg/gallon cipro. Lighting of 270 par with refugium bulb for 4 h per day.
Day 3
100% water change with 14 gallons new salt water with 25 mg/gallon cipro. Lighting of 270 par with refugium bulb for 4 h per day.
Days 4-6
Nothing done
Day 7
100% water change with 13 gallons new salt water with 25 mg/gallon cipro. Lighting of 270 par with refugium bulb for 6 h per day.
If all goes as hoped, the plan will likely involve keeping the anemone in this situation (no water changes) until it is ready for the display sometime this weekend.
Picture 3 h after lights on today, mouth is closed, no deflation
Picture less than a minute after 100% water change today, showing the foot has climbed the rock section I glued onto the base (which is at the bottom of the picture of the anemone), raising itself at least a little toward the light: