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I bought this recordia from CBA about 3 months ago and it had a small smooth blob of something next to the recordia attached to the rock. Every time I move the rock I notice that this thing will slowly move from it's orignal position just slightly. It always seems to stay next to the ricordia. In the last week the blob has formed a small opening which looks like a small spout, the same as a clam has. It has a slimy hard feel to it, not spongy. I was thinking it was some kind of sponge. Anyone know what this is?

 

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Tagging along. I have some that look like that but are clear in and around my LR. They seem to be harmless whatever they are.
 

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sponges might move around as they spread, (it would look like they are moving anyway. but im not sure about the spout, great pic though.
 
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