Black Reddish Sponge good or bad?

[lonewonderer]

Hey there! I just wanted to know if this sponge is bad for my tank. I bought a colony of zoa and after 2 months that sponge appeared. Is it a good thing or bad? TIA

 

[blaxsun]

It sounds like it's a nuisance more than anything else.

Black Sponge

It’s been a long time but I thought I remembered something about black sponge being bad. Any experience with it?

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