identification

Hey folks, was wondering if i could get some help identifying this fuzzy looking algae and if you all have any suggestions for combatting it. The coloring is almost a light gray, somewhat hard to describe. It mostly has appeared on the higher placed rock work, the lower rocks and shaded areas...

Hi all, I've been out of the salt game for quite some time. I was out for a stroll and found this this thing left out curbside. It looks very high quality and like it hasn't seen much use. My initial thought was protein skimmer, though I don't see a collection cup here. Then i thought it may be...

Hi all, What could this be? Got this dead sea barnacle from a friend, Looks like an upside down anemone?? Thanks, Tim