Protein Skimmer for Saltwater Aquariums, Bubble King

?? I am listing this on behalf of my husband with his permission.

It was used for approximately 4 years and has been stored in a dark place for about 6 years.
It was working without any issues until it was taken out of use.
I have performed a basic cleaning for this listing.

Please only purchase if you understand that this is a used item sold as-is.

The price is negotiable.

Please feel free to ask any questions.
Regarding questions about the product, I will need to confirm with my husband before answering, so it may take some time.