Yellow/orange sponge? pls ID

krash7172

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Saw this when my softies retracted tonight. Orange color sponges? Good or bad?
sponge.jpg
 

Mastering the art of locking and unlocking water pathways: What type of valves do you have on your aquarium plumbing?

  • Ball valves.

    Votes: 68 52.3%
  • Gate valves.

    Votes: 67 51.5%
  • Check valves.

    Votes: 33 25.4%
  • None.

    Votes: 29 22.3%
  • Other.

    Votes: 9 6.9%
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