This is the SCA 302 Protein Skimmer I’ve had it running on my 180 gallon reef with great success. It is rated up to 180 gallon heavy bio load. The Venturi is broke however I’ve fixed it with my own parts. You can buy the replacement for 15 dollars on their website. I cleaned this and ran it through vinegar it is is ready to go. I attached a picture of my tank so you can see it gets the job done I just added more fish and upgraded my skimmer even bigger