I have a hand blown Gnome Glass Protein Skimmer for sale. These can be used in AIO tanks, or a small nano tank without a sump. It works by using a wood airstone and an air pump to make micro bubbles which then produces the skimmate that comes out the top into a container of your choice (I used a empty milk jug under my stand). I had this on my 28 gallon cube and it was great. I no longer have the cube so it's sitting around collecting dust. I will take $70 shipped.

