Does this exist and what it is?

[loveaddressbox]

I was researching how to clean my tank... And find thi lovely thing:

What is and how to get 10 lol

 

[SoloChromis]

BUMP :eek1:

 

[alb_56]

Kind of looks like red kelp to me.

 

[loveaddressbox]

Oh! Thank you for the BUMP and thanks for the reply!