I put small UV back in mini reef, it kills ick and micro algae, does not impact coralline growth. Petsmart has 9 watt “Green Algae killing machine” buy an extra UV bulb, they run 3-6 months. 9 watt is up to 40 gallon, its a low flow application. 39 dollar insurance policy.
"just end the parasites with UV" and be done with it. I did fresh water baths, copper, cleaning shrimp, in the end you have the plaque need to get rid of it, hospitals tanks, nice idea, but UV just kills them, they jump off every 24 hours for a new host and then they die. That's it, problem solved. 39 dollars at petsmart.