Tempting fate

[synchiropi]

Just wondering if that is what I am doing by having this:

 

[Lourdes]

I can't tell what it is..

 

[synchiropi]

Just a gigantic piece of red algae!! Nobody seems to want to it it though... so I am wondering if it may be toxic. This large clump is no more, however it did look kind of cool so I was wondering if it was dangerous to try to encourage it again.