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View Full Version : Types of flat worms? All bad?


nashorn
01/06/2007, 10:18 AM
I see a lot of reefers removing flat worms. I had them a year ago and they didn't seem to do anything destructive. Many came out when the lights were on and craw away when off. I never seen any on the corals just on live rock. I didn’t treat them but over a few months all had disappear. I do see some in my refugium and they react to light the same way. Are some more destructive then others? The ones I had are red.


:confused:

SDguy
01/06/2007, 11:08 AM
Here's how I look at it. The red ones are a nuissance, and look bad, but generally don't hurt anything...and are photosynthetic. If a flatworm is not photosynthetic, it has to eat something. What are the odds it'll eat something you are trying to keep alive in your tank? Pretty good. I'd get rid of any I saw.

kiknchikn
01/06/2007, 11:18 AM
As far as I know there are some, such as the Amphiscolops flatworms, that are harmless in your tank (and are actually somewhat interesting looking). Even those can over populate your tank if given the opportunity though.

Here's an example of a harmless one:

http://www.wetwebmedia.com/WormPIX/FlatwormPIX/AmphiscolopsFlatWmMikeG.jpg

You can read up more about flatworms here:

http://www.wetwebmedia.com/flatworms.htm

Lyscer
01/06/2007, 11:20 AM
Yeah, my flat worms have been in my tank for almost a year. They haven't damaged anything... they just aggrevate me because they are an eye sore. I'm going to be treating with FWE tomorrow.

kiknchikn
01/06/2007, 11:26 AM
I had a major outbreak of what I believe are the amphiscolop type, but as I started to get control of my nutrient problem they started to die out and are all but gone now.

nashorn
01/06/2007, 02:00 PM
Thanks for the link. I see there is a Flatworm Eating Sea Slug.
<a href=showthread.php?s=&postid=8911900#post8911900 target=_blank>Originally posted</a> by kiknchikn
As far as I know there are some, such as the Amphiscolops flatworms, that are harmless in your tank (and are actually somewhat interesting looking). Even those can over populate your tank if given the opportunity though.

Here's an example of a harmless one:

http://www.wetwebmedia.com/WormPIX/FlatwormPIX/AmphiscolopsFlatWmMikeG.jpg

You can read up more about flatworms here:

http://www.wetwebmedia.com/flatworms.htm

Lyscer
01/06/2007, 02:45 PM
If you are referring to the blue velvet nudibranch(Chelidonura varians), make sure to get good powerhead filters if you get one. I bought one and had it for about 2 weeks before it got sucked up in my maxijet powerhead. I had the maxijet plastic screen on it but that still ripped the nudibranch up. I would recommend a sponge on them or something similar

greenbean36191
01/06/2007, 05:24 PM
I wouldn't recommend even considering the slug (not a nudibranch BTW). It only eats Convolutriloba, and once their population decreases it has trouble finding them and starves. At that point, without a predator the worms usually rebound. Basically the slugs aren't effective and are doomed in the hobby. All of them are wild caught too, which IMO makes their use even more unethical.