UP for sale is a great tunze nano skimmer. Works great on small tanks. Produces alot of skimmate. Had it on my 20 gallon but upgraded and have no use for it. It is in great working order. The only thing it is missing is the magnet because i used it in my sump and had no use for it so i removed it. You can get any magnet and glue it to the skimmer and it will work fine. Asking $60 obo plus shipping.