I broke down today and went forward with a flatworm treatment. I was very apprehensive after all the horror stories that I have read about..... I followed the usually steps of siphoning off as many visible flatworms as possible. I would say that I had a moderate infestation. I replaced carbon and GFO in my 2 tlf reactors yesterday and ran the entire time when proceeding with the treatment. After dosing with the FW eXit, I started doing water changes from my RODI resevoir. I did one about every half hour for two hours. Every time I removed hundreds if not thousands more flatworms. Fish seemed a bit stressed within 20 minutes. Coral polyps retracted as well pretty quickly. Now about 6 hours later fish seem to be returning to normal but still a twitch now and then. Coral polyps are beginning to come back out. There are still a few visible flatworms on the sandbed, not sure if they are still alive, dying or healthy?? I plan on doing another treatment in a few days if even one FW is visible. I would have to say that my diligence in consecutive water changes had significant benefits... If I didn't and just let the little buggers die out in the tank I think the tank would have crashed. I will keep everyone up to date, so far things are looking good... Keeping my fingers crossed that they continue!!