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henry92

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Hi there, I have my very first question to ask on here. I have here a photo of a bit of rock, that appears to be growing this white stuff on, kind of looks like under water mould when I tried to research online closest I could come up with was some kind of sponge. Basically wanting to know what it is and is it harmfull. Many thanks Henry
20250109_200059.jpg
 

revhtree

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Welcome to your new home for saltwater reef aquarium resources and fun! Welcome to the family! :D
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henry92

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Welcome to R2R!
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Looks like sponge growth and some vermetid snails
Perfect, so my online guessing could be right. So I assume not a bad thing, just looked strange it slowly taking over. As for the vermetid snails, that's another challage, I think I failed removing them manually the first time, just ended up with more
 

vetteguy53081

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Hi there, I have my very first question to ask on here. I have here a photo of a bit of rock, that appears to be growing this white stuff on, kind of looks like under water mould when I tried to research online closest I could come up with was some kind of sponge. Basically wanting to know what it is and is it harmfull. Many thanks Henry
20250109_200059.jpg
This is clatharina sponge which can be invasive in time. Can be pulled off with a dental pick or similar
Vermetid tubes can be broken off at base and discarded
 

Nor'easter Reefer

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Welcome to reef to reef! Don't be a stranger!
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Looks to meet like you have some sponges(good!) and some vermetid snails (ehhh not the end of the world but not necessarily desirable)
 

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