there is no better fix possible than taking your tank apart copying threads where this is logged, cleaning every section, doing a full water change, acclimating it all back using the mapping thread and then re ramping up your lights for a week. anything shy of that is less likely to help you.
how resolved are you to fixing this/ no hesitation>? It is much harder to convince people to fix their tank than to actually fix it, you'd be amazed at the willingness to grip onto invasions people will display. its not hard to fix invaded frag tanks, its hard to convince the owners to uninvade them. so many reasons they wont...
Id/measure/buy something/install/wait = hesitate
rip clean=not hesitate, tank looks sharp by tomorrow. simply opt to whip it into shape. put it through forced exercise program, participation mandatory.