What is this hitchhiker?

[ZenGuitarGuy]

Week 3 of my tanks cycle. Noticed these tiny wispy things, and I'm hoping it's not aphasia!

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[ZenGuitarGuy]

Not the best pics. Lost my phone yesterday; this is an older phone. I think one is a pineapple sponge now that I see it blown up. The others?

 

[Rueda13]

if it is what I think it is...it is an aiptasia. They are not good. I got rid of mine buying 2 peppermint shrimps. Don't yank them because they will multiply

 

[Banff]

Pineapple sponge.

 

[Moeshi]

Sponge indeed.

 

[ZenGuitarGuy]

Sponge indeed.

What about this? Looks different to me.

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[zoafarm]

Not Aiptasia. Don't worry about it.