What is this??

[Funkytone]

Awesome! love the reponses guys!

#1 - I'll keep the sponge, thats a neat thing. Should I "feed" it at all?

#2 - Just stabbed 'em with the Chem-Marine Aiptasia stop, hopefully that will work for them.

#3 - About to kill it but wanted to double check. The picture looks a bit brown but he's really a purple colour..... and I thought Aiptasia was a bit transparent? He's definatley not.

Any thoughts?

-Thanks
Tony