need id help

[scar_11]

It looks like I have a spider in my tank I find a white string things that look like spider webs in my tank what are they from? and is it harmful

[mr.wilson]

Look up vermatid snail.

[hillegom]

Have a look at this
http://www.xtalworld.com/Aquarium/hitchfaq.htm

[scar_11]

Good Morning all
Thanks guy that what it is