Identify

[cashman95]

Does anyone know what this is? Is this an algea or a bacteria bloom? Its all over my tank and esp. on my Cheato in the refugium.

stringy stuff in pics?

 

[JSeymour]

Tube snails, Tenagodus sp. or Vermetus sp.? Look to see where the "webs" are coming from. I don't have any good pictures of mine, but when I feed, I find a dozen or so webs coming from them. Mine also don't have extending tubes yet, just coils of shell stuck to the rock.

Here's a good article, Snails That Worm Their Way Into Tanks.