Blue Sponge - Good or bad?

[>>klong<<]

This guy kinda appeared out of nowhere after a few day with the lights on. I definitely didn't notice the vivid color before. Good or bad?

 

[WV Reefer]

This guy kinda appeared out of nowhere after a few day with the lights on. I definitely didn't notice the vivid color before. Good or bad?

It’s cute! Sponges are good guys for the most part ........although some can be aggressive growers.

 

[sp1187]

bad. send it to me.

 

[xxkenny90xx]

Wow, that is a nice sponge!