White thread-like things

taulgrl

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I’ve noticed white thready things on my rock lately. They don’t seem to be on the glass. Today I noticed them on the walls of my sump (picture). They look like worms but they don’t move at all. What are they??
F5ACF459-22A9-41FB-8430-995C9135BAD1.jpeg
 
Fritz

IS RTN/STN MORE COMMON THAN IT USED TO BE?

  • Yes! I (and/or my friends) have experienced it more than it used happen.

    Votes: 7 14.9%
  • No. I think it's about the same.

    Votes: 14 29.8%
  • No. It's actually less common than it used to be.

    Votes: 3 6.4%
  • I've never experienced RTN/STN.

    Votes: 9 19.1%
  • What's RTN/STN?

    Votes: 14 29.8%
Santa Monica Filtration
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