What are these all over my tanks glass

IKD

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Picture from @ZaydRossi

These look like hydroids. Harmless and tend to disappear over time on their own

E7D9FD7F-E01D-4C45-8384-3EF157B8EB5A.png
 
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ZaydRossi

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Thanks mate they are 100% hydriods, Cheers for your help
 

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