Brown Flatworms Are Annoying Me.

Zire

New member
When I first bought my torch about 4-5 months ago I noticed it had some brownish specks on it, they never seemed to move and blended in perfectly with the coral, except for the white tips(it is brown and white). The coral was healthy, accepting any food I gave it, with vibrant colours and always well extended(it still is) so I gave these no mind until one day when gazing into my tank I saw one of these moving ever so slightly.

I couldn't believe it, but upon closer inspection I saw it was a flatworm with a very faint greyish/white line down the middle. I inspected every coral and saw that they were also present on my frogspawn, elegance, doughnut and hairy mushroom corals. I'm not sure exactly which coral introduced them, but the point is they are there. They seem to have an affinity for LPS other than the one mushroom they have taken over, which appears the most heavily afflicted. The odd thing is these even after constantly searching, I have yet to find one of these anywhere other than the corals, not on the glass, rocks or sand at all. Also they don't seen to negatively impact the corals they are on, they are all still colourful, well inflated and not sickly at all.

In an attempt to get rid of them I've increased flow, and have begun doing more regular water changes(my nitrates were through the roof at around 30, now down to around 20). I'm also going to begin vodka dosing once I have good WC schedule squared away. I tried siphoning them off corals, however it didn't work too well. Could anyone suggest some other way to get rid of these things?(I'm trying to avoid a treatment like flatworm exit if possible). Or perhaps provide me a clue as to which flatworms these might be?

Thanks for any advice.
 

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