Macro Algae ID? Similar to Caulerpa Racemosa. Wild from Australian Live Rock.

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Update on the snails. They're over a year old now - I estimate there are 50-100 survivors.

I would've expected them to be larger by now, but nevertheless, I'm pleased that this many have survived this long.

 

[Max_in_Tax]

Also, more random musings - the Vermatid Snails seem to be an essential ingredient for promoting growth of other microorganisms and certain types of macroalgae.

Most people go out of their way to kill them off, but I really think they've played a big roll in the success of this tank - primarily by keeping the rock surfaces clean.