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svynx
04/06/2017, 08:56 AM
Hello everyone. I've done a little research on this and as far as I can tell, this is an encrusting sponge. It's almost iridescent, and film like, but tough. Am I correct? I'm trying to get rid of it as it is covering a nice pipe organ.

Ron Reefman
04/08/2017, 06:02 AM
I don't know what it is, but I will say it doesn't look much like a sponge to me.

Hope somebody can help with a firm ID. Good luck.

carrots
04/08/2017, 01:04 PM
I have something like that smothering my zoa patch. Looks like a typical sponge with all the vents, light grey in color but the outside layer is as hard as rock. I haven't been able to remove it due to it being attached to a large rock. Not sure what to do.