Look what I found growing in my weir, what is that thing?

EmptyWallet

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I moved some furniture last night and for the first time in a year or so, exposed the side of the tank, including the weir and discovered this magnificent creature - but what the heck is it (about the size of a medium pizza)

I understand all the little white tiny 'things' are siliceous sponges, is that just a giant one forming?

sponge.jpg
 

MTBake

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I moved some furniture last night and for the first time in a year or so, exposed the side of the tank, including the weir and discovered this magnificent creature - but what the heck is it (about the size of a medium pizza)

I understand all the little white tiny 'things' are siliceous sponges, is that just a giant one forming?

sponge.jpg

That is definately a sponge. Not sure on the type though. Doubt it's one of the smaller ones turning into a giant colony. Most likely something totally different.

It sure is cool looking!
 

garbled

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towards the edges of the photo I see some smaller ones of the same type as the big one. It's *so* hard to transplant sponges. You can't expose them to air at all. Maybe you could get one of the smaller ones out though..
 
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EmptyWallet

EmptyWallet

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towards the edges of the photo I see some smaller ones of the same type as the big one. It's *so* hard to transplant sponges. You can't expose them to air at all. Maybe you could get one of the smaller ones out though..
It is in my weir, perhaps I can 'stuff it down' the outflow pipe into the sump that way - what could go wrong? (lol). Failing that i'll serve it to my Moorish Idol for his b'day, he loves the little selacious sponges !
 

KrisReef

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Bryozoans are brittle like potato chips, sponges are like wet potato chips (Science is so precise!) I don't think your Moorish idol will eat a Bryozoan, but a sponge will disappear like a can of Pringles.

Are you using natural seawater in that tank? Likely planktonic hitchhiker from the fouling community.
 
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EmptyWallet

EmptyWallet

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nah I use synthetic salt, but suspect the first siliceous sponge came in with some live rock in the early days. I'll give it a prod tonight but I'm certain it will be soggy/squishy not brittle/hard
 

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