Sigh... now what?

[Dom]

Previously, I posted a picture of a reddish carpet like substance growing in a 5 gallon nano I put together for someone. As it turns out, it was Spirulina. The solution was a small HOB refugium which apparently is extracting the nutrients the Spirulina thrives on, no sight of the stuff since.

But now, there is something which looks like a cotton ball or a cocoon growing in different areas. Anyone know what this is and how to address it?



Thanks.
Dom

 

[Lionfish Lair]

It's a little pineapple sponge. You can pluck it off or leave it.