Need ID on Weird Discs

I have a strange infestation of these weird flappy discs than are multiplying across my glass. At first I thought it was a strange algae but then I realized they were cruising around on the glass and touching things!

Most of them are kinda hour glass shaped and seem to have some kind of mouth and a tail.

I siphoned them out yesterday and they are back in strength today. :-/

Any guess?

 

Matt Could this be it? :-/ http://www.britannica.com/eb/article?tocId=9034671&query=fluke&ct=

 

Thanks John. That got me started.

I've got flatworms! Oh boy!

http://www.melevsreef.com/flatworms.html

 

Good luck Matt that sounds like a lot of work to get rid of them :-/....... John

 

Yeah it does, bummer!

 

DOH! I hate those little boogers Not sure if chemical treatment is a good idea in a 20 gallon though. Have you decided how you're going to treat them?

 

I was thinking I'd siphon a couple more times and maybe add a powerhead. They seem to be collecting where there is low flow.

I ordered that salifert stuff too, but that will be a last resort. They seemed to show up after I turned my heater up. Not sure if that has much to do with it or not.

:-/

 

Don't know about the increase in temps but the addition of the powerhead and siphoning should help. You'll also want to keep detritus and algae to a minimum as they feed on it as well as being photosynthetic....adaptable little b*stards!

A good trick for saving time when siphoning is to fix a strong beam of light on a particular section of your glass, wait for the worms to congregate then siphon away. Best to do shortly after the lights go out.

 

Thanks. I'll try that. Looks like I have hours of fun ahead. :

 

Ain't nature grand? Try to avoid squishing them if you can or you'll only make a bunch of little flatworms.

If you're lucky, they will go away with little work on your part. Sometimes, however, the populations get so large that they eventually crash and burn. This can wreak havoc in your tank as flatworms release toxins when they die.

PS. Thanks for the karma Matt!