can you tell me what skimmer this is??
so i am getting this skimmer from a family member who i just found out is a reef addict and he is trying to explain what the skimmer is. he says its an in sump skimmer, 500$ when he bought it, used on a 125 reef aquarium, and he ordered it from germany. He is known to be a little crazy, and might not be explaining it properly so any help with this would be great. He also said it was a berlin skimmer but there are no red sea berlin skimmers for 500$. I have no clue what he is talking about. the only 500$ german skimmer i know of is the deltecs.