help me with this ID

[nelson.jdautobody]

so i brought home some macro algea for my sump/refugium and i started noticing these little bugs climbing up the walls etc. not sure what they are but they seem to have a hard shell and look like snalis maybe?? thought i would send a pic and hopefully someone with more years of experience than me can ID it for me and tell me how concerned i should be. i kind of subscribe to the notion that anything i didnt put in there intentionally is probably unwelcomed and unwanted...

 

[Daddycline]

Stometella from the look of it. Harmless. Maybe more will confirm this to be%100

 

[DSP]

Stomatella would be my vote as well

 

[bct15]

It looks sort of mutilated in the pic but it's either a stomatella or a chiton. Both are good to have. I'm leaning more towards stomatella with the shape of the shell though.

 

[nelson.jdautobody]

you guys are awesome. thanks! its a little mutilated caue it doesnt come off the glass easy-lol