are these the bad kind flat worm

[Julius]

They are all over the rocks and glass. Appear to be feeding on algae. None are on corals. I recently added a sps and some live rock. Are these bad. I would rather not use Flat worm exit. WHat are the natural predators.?



http://img.photobucket.com/albums/v241/ ... 1163753716

 

[Anonymous]

Those are Convolutriloba retrogemma (Acoel Flatworm) they can harm corals by shading them to death (by their shear numbers). Simply syphon out them out early in the morning as they are attracted to light.
I do not recommend the use of any natural predators for them.

Regards,
David Mohr

 

[Julius]

Thank you for your time David. Why is natural predators a bad idea?

 

[Anonymous]

Thank you for your time David. Why is natural predators a bad idea?

Natural predators are hit or miss. Just because an animal is reported to eat Acoel Flatworms doesn't mean that that individual animal will. If the animal does, what will that animal eat once the flatworms are erradicated or will it starve to death?

Regards,
David Mohr

 

[Julius]

Those are Convolutriloba retrogemma (Acoel Flatworm) they can harm corals by shading them to death (by their shear numbers). Simply syphon out them out early in the morning as they are attracted to light.
I do not recommend the use of any natural predators for them.

Regards,
David Mohr

Thanks David, I did as u suggested, siphoned them out in the morning. I can find one or 2 if i look very hard now.