ID this Macro ?

[TC2]

Can anyone identify the white macro algae - if in fact it is a macro algae.

It's growing fairly quick, has never had any color. The filaments are tubes not leaves.

Also, any guesses on the pink/red growth behind it ?

 

[graveyardworm]

Looks more like a sponge growth to me. See the holes in the ends of the branches, those are the siphons.

 

[graveyardworm]

The purple calcaerous plate behind it is awesome, mesophylum, wish I had some.