What in the world is tbis

[Emi2852]

So I have a 20g reef tank, and recently a tuxedo urchin died in it, I found him before he completely rotted out, but since then I had a huge green algae bloom and now I found this think in the photo.

Temp: 26c
alk: 8.06 dkh
Cal: 346 mg/l
Mag: 1284mg/l
I don’t have phosphate or nitrate atm, I had to leave for work after finding it so I didn’t have time to take them.

 

[bradleym]

It looks like a sponge, which is a filter feeder of sorts... Makes sense it would grow under the same conditions as an algae bloom.

 

[\m/reefsnmetal\m/]

That's just sponge

 

[Duncan62]

So I have a 20g reef tank, and recently a tuxedo urchin died in it, I found him before he completely rotted out, but since then I had a huge green algae bloom and now I found this think in the photo.

Temp: 26c
alk: 8.06 dkh
Cal: 346 mg/l
Mag: 1284mg/l
I don’t have phosphate or nitrate atm, I had to leave for work after finding it so I didn’t have time to take them.

Sponge