Try to scrape those Aiptasia anemones from the plugs.
Also, it would be good to carefully dip them in Hydrogen peroxide to remove some of those nasty algae.
10% Hydrogen peroxide to 90% tank water for a minute to begin with, after scraping the majority of the algae from the plugs with a sharp knife.
Use gloves and goggles, and be careful with the knife.
Good luck!
Grandis.
Where did you get the top ones on post 14? Name?