If you have small shrimp or fish, there is a high chance it will suck them in and you'll be crying, even with the protective cover it has, which greatly reduces its performance. I have it set with a timer to work for 10 minutes every 6 hours and I am very satisfied, but if you leave it running all day, nothing will remain alive if you have small creatures.

Perfect skimmer!! Easy to use and definitely worth the money! Keeps the surface spotless. Silent and delicate. The only downside is that the cable comes out from the bottom side and is visible, but I secured it with a black zip tie on the skimmer to hide it a bit

It's incredible.. I didn't expect it to be so efficient... In a very short time, the entire surface became crystal clear.. Let's see how it will withstand over time...

It is perfect.
You trim all your tasks, you put it on for two minutes, and the surface is spotlessly clean.

It cleans the water surface in the aquarium very well. It needs a second filter for a male turtle that we want to keep clean. Since I have two filters, the aquarium filter and this specific one, I clean the aquarium once every two weeks.

Indeed, it cleans the water surface as advertised. As for its reliability, eheim does not disappoint. It can be used for aquariums of all sizes, but of course, the larger the aquarium, the more time it takes to clean it completely.