Red bugs are easy to fight you can treat whole system and get ride of them, aefw is different story...
Recently fighting with acropora eating flat worms, today took all sps from my tank to deep them one by one...
Some colonies grow over a live rock so I used long knife and hammer to chop them off the rock but carefully to not destroy them.
Today I killed hundreds of flatworms, and scraped off many eggs. The only sps I couldn't find them on was German blue, plana, echinata, and 2 other that names I don't remember.
3 more weeks and they gonna be gone.
Flatworms are reproducing slowly, slower than red bugs and in well maintained tank with some 6 line or 12 line wrasse many people don't even know that something is eating them sps, fish can keep them under control.
Eggs need more than 2 weeks to hatch so there's big chance to kill them all.
Here are pic of 1,1/2"- maybe 2" big frag of sps I couldn't believe that on this little piece was so many flat worms...
This coral lost colors almost completely and didn't expose polyps at all, 2 hours after deep I can see polyps, I'll try to snap some pic tomorrow cause only actinic light are on right now.