I have 3 anenomes but im no expert by any means, But i do know any high parameters for anenomes could kill it. As far as algae problems go in saltwater aquariums (primarily reef aquariums), none is as nightmarish as bryopsis. It just doesn't go away with normal efforts the work on fighting most other algae outbreaks
The solution to nuking, wiping out, a bryopsis outbreak (no matter how massive the outbreak), is to raise the magnesium levels to 1600ppm (normal levels ~1300ppm) and keep it there for 3 months. Do not raise it faster than by 100ppm per day. Once you have your magnesium levels at 1600ppm, there may be a slight increase in algal growth (at first), and then the bryopsis algae will shut down and begin to fade and die off, whereby your grazers (snails, hermits, emerald crabs, tangs, etc.) will eat it. Once successful, lower Magnesium levels to 1300ppm and keep it there long term.
Once the Bryopsis reaches its threshold for binding Magnesium, the Magnesium will then function as an enzyme inhibitor and cause the Bryopsis to shutdown and die off.
To raise your magnesium levels, there are many different products you can use, such as:
•Kent Tech M
•Magnesium chloride
•SeaChem Reef Advantage
And once you have the problem licked, it is vitally important to focus on prevention. This means maximizing high water circulation in your aquarium, continual removal of detritus, efficient protein skimming, keep pH at 8.4, use several forms of removing phosphates and preventing their addition to your saltwater aquarium:
•use phosphate removing media such as Rowaphos or Puraphos;
•employ use of chaetomorpha and gracilaria algae in a refugium;
•use calcium hydroxide (a.k.a. kalkwasser) to precipitate out phosphate so that the protein skimmer can remove it; it also elevates the pH and contributes to calcium and alkalinity;
•filter tap water with RO/DI (reverse osmosis with deionization post filters) as it removes phosphates from tapwater;
•thaw out and rinse all frozen foods prior to feeding them to your saltwater aquarium, as just looking at the thaw water will show you there is a lot of unwanted nutrients that would otherwise end up in your tank and contribute to algae problems;
•service your protein skimmer at least once a week and keep it functioning at peak efficiency