CNZAquarium Internal Surface Skimmer JY-03

I have had these for over 10 years and use them now on my 125 and both 75 galllon tanks. They help increase oxygen levels in water and keep surface of water clean.

This could be a great product with a few simple changes. First, the tube is stuck to the skimmer, either glued or melted. It's not usable. The floss isn't big enough and should be replaced with a filter sponge to increase media surface area. Other than that it cleared the film in my 12 gallon nano tank in less than 2 minutes. With these changes it would be 5 star product.

Bought this one to replace the one I bought on 5 years ago, I use in saltwater tank and it skims the surface very well allowing good oxygen exchange, and old one still works, what I do is when it needs cleaning I put one I previously cleaned in and take dirty one out and clean at my leisure, this is honestly one of the best skimmers I've used and I've tried many, I can't believe how good it works and how cheap it is, really a hidden gem.

Not going to help clean my 120 gallon tankVery cute little thing

Great suction with the filter adjustable! Works perfectly in my 40 gallon tank

Skimmer came with melted silicone tube which glued to the plastic base of skimmer, making a marking groove on it. I decided to return skimmer back to eliminate any skin poison situations which I had previously from plastic fishing lures and they had ability to melted as well.