reminds me I have to revisit your thread, just have to set aside a half day to do so
Good luck with that!

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reminds me I have to revisit your thread, just have to set aside a half day to do so

I have had an ongoing issue with Red Planaria, to the point of nearly covering all live rock. The spotted mandarin goby for sure eats them, but cannot keep the infestation down. Yesterday I prepared 20 gallons of fresh saltwater, in preparation for a FE treatment. Everything seemed good, I siphoned bottom of a 5 gallon bucket, then ran treatment, then within 20 minutes, began siphoning the dead ones, which was 2 more bucket bottoms covered. I then replaced water, 60% roughly. I changed carbon, so it was fresh. Believe it or not, I still ended up netting a couple hundred more dead ones. All seemed well, some corals closed down, but eventually opened towards the end of the day. This morning I checked on the tank, and found a dead clown and chromis, still one chromis missing. The mandarin, female clown, and cryptic wrasse are swimming and eating fine. 
Your welcome my friend! 15 years at this, and never had a problem with these pests! This tank is throwing every reefing challenge imaginable at me, but not giving in, nope, not 1 bitWow sorry to hear you lose fish like that and sorry to hear of your infestation.
Thank you for the warning.
I would much rather welcome RB's or AEFW over RP, this has been a real nightmare! If you go back on this thread, you can see how I broke the tank down and killed the rock, dipped in muriatic acid, soaked in bleach, and still........ RP!!! Likely my frags in quarantine at the time still had them, despite dipping. Good news today though, have not spotted one RP yet, but will continue the gameplan 
The chemical itself is harmless, always has been each time used in the past. Point for me is, that this was a total infestation, I would imagine that we were looking at a couple thousand, maybe more. The next treatment will not be able to allow for the population to become strong again, therefore the harmless chemical, shouldn't have to kill so many. I am 100% certain it was the RP dying that harmed the fish. Hopefully my problem will help or encourage others readingThat sucks, never heard of using Fe, at 2 or 3 dead fish I would not try it again, not an expert on fish but maybe Fe is poisonous to some?
If you can siphon into a sock in the sump you can siphon all day if you want, keep carbon fresh, I did this and eradicated an epidemic, you can even add floss to the sock, gentler landing for the planaria, less chance they will explode!



