its hard to say what help as i was also trying to get rid of the gill worm at the time so this is what i done
up the temp to 92

added 15 kg of salt
i was scared to keep that up for long so i dropped the temp back down to 86 and flushed the salt out over a few days
i then treated with esha 2000 when i put that in which i have used before with no problems lots of people said its got copper in so i removed that after 5 days
i stall had the gill worm at this point so i then treated with tremazol which killed of the gill worm
all of the things i done claim to help healing so its hard to say which one done the job
she has now fully healed which took about 20 days no scars with the only difference being one of the spots has turned into 2 smaller ones
to tell the truth i know its not a good thing when your rays get sick but the male p14 who done the damage was one of the rays with gill worm and he stopped feeding and attacking her giving her time to recover as she was not affected by the worm so fed like normal with no more stress
since the gill worm has gone ALL of my rays are 100 x more aggressive than before and the 2 female p14 are doing more damage to each other than when they have bred with the male
i was shocked how fast she recovered i thought she was a goner