great use for salt and fresh water skimming
using in fresh water getting good use taking unwanted wast out of the water

Installed it in a. 15 gallon (60L) tank and it does its job well.
I have to note though that the picture is not accurate, in reality the skimmer is wider. Otherwise, good product

Good afternoon. Skimer has tested, works well. At me costs on an aquarium of 40 liters

air bubble is tiny and small, better using 90litres above air pump to connect. The water level of the skimmer not higher than the cover is better