It does look like a Clavaria, and I don't know what it is, and it definitely could be a sponge, but I think it is a Red Algae (Rhodophyta).could be Clavaria Miniata
That is the post, I've searched all over the net but I couldn't find it.I thought I remembered seeing this a while ago:
Hi, someone suggested to me that could be Thorea Hispida - Rhodophyta.
It looks a lot like that!
The scale, texture and color match, i think...
should i take it out? or let it grow?
Is a good algae or bad one? 😵
It's a sing of some deficiency?
Learning something new everyday,
cheers