What are these?

[koikeeper]

I've got loads of these little snails in the sump, any Ideas?

 

[twentyleagues]

I've got loads of these little snails in the sump, any Ideas?

Looks to be a limpet of some sort. @ISpeakForTheSeas ?

 

[ISpeakForTheSeas]

Looks to be a limpet of some sort. @ISpeakForTheSeas ?

Yeah, some sort of limpet. I don't see a keyhole on it, so that would indicate a true limpet, which would be a good CUC member/a keeper.