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Flat worm? 03/24/2008
First thank you for the service that you provide.
<<Thanks for the comments. Andrew here today>>
I have searched the site for similar flat worms as well as other sites and I cant really make up my mind what to do about these guys. I have a CPR hang on refugium with built in protein skimmer. I saw three of these guys when looking at the fuge from the side today. I pulled one out with tweezers to try to get a picture which I am not very good at anyway. Sorry about the quality. They seem light brown when out of the tank and slightly reddish when under the light. I have only seen these in my fuge on my macro algae. I have not seen them anywhere in the display. I have a six line wrasse perhaps he / she eats them? They are only a few millimeters in length and have a uniform border, no jagged edges.
<<Planaria flatworms. They thrive better in lower flow areas of the tank, which is probably why your noticing them in your fuge. If they are not in plague proportions, then you can leave them alone, or simply such them out when you see one with a turkey baster>>
The flow in the CPR is very low as there is only the inlet pump (RIO) for circulation and protein skimming. I have a ton of flow in the main tank as it is sps dominated hence my concern. Any info would be greatly appreciated. Here is the best I could do picture wise.
http://i250.photobucket.com/albums/gg252/mlgiii23/worm.jpg
<<Thanks for the questions and the nice photo, hope this helps. A Nixon>>

Some Kind of Flatworm... Planaria... Likely Convolutriloba retrogemma 12/03/2007
Hi my name is Mike
<Hi Mike, my name is Michelle, my father shared your name.>
and have a 150 gal reef tank and have some kind of flat worm.
<Yup... >
and I'm not sure if that’s what they are.
<Is Planaria, a flatworm, likely Convolutriloba retrogemma>
I need to know what these little things are cause they are eating all of my star polyps and some of my mushrooms.
<They generally flatworms tend to cause injury by smothering the coral… and once the corals begin to decay the flatworms start to consume the zooxanthellae. Your corals do not seem to be covered to the point that I would expect death… perhaps there is something else at play here. More here and the related links in blue:
http://www.wetwebmedia.com/pestflatwrmanthony.htm
http://www.wetwebmedia.com/flatworms.htm
Good luck,
Mich>