I got it as probably many bought together with a cube Set of Dennerle. This is all the more times cheaper.
The only thing that bothers the good impression in my opinion a bit (s) is the filter material. It is usual with the simple filter, just a sponge filter. Good (outer) filter have multiple filter materials among other things, granules etc.
Really good, I find that this is possible, most recently. As a new filter module or as an extension and additional filtering. There you can filter granules, phosphate filters (for algae) or activated carbon einfüllen.Ich've now bought the expansion and filled with BioFilterGrunlat. This I have a two-fold filtering. The material needs to be changed only every 3 months to half. So it is quite economical.
Many have - rather unfounded - fear invite that young shrimps in the filter. For Dennerle now has a baby protection as an accessory in the program, not even on Amazon.
From me there so 4 stars for the filter as it is put on sale, and 5 stars for the corner filter with extension.
PS:
The filter material must be replaced only every 3-6 months. In my experience, it is amply sufficient earliest after 6 months. You can make something clean the filter sometimes. Since collect the bacteria in the filter material, frequent change is anyway not advised. You also have to make the filter sponge down regularly clean. I think 8 euros per year for the filter material is not expensive. If that is still too expensive, buy an essay in which you can then use alternative filter materials, I mean it here and there one can also material that is not from Dennerle purely do if you want to save.
I still have the plan:
And inside all the normal flow filter.
