Carbon sponges absorb fine, drug residues, and other toxic compounds. These are thus deprived of the aquarium water and ensure a crystal clear water. Like any activated carbon, also the activated carbon of this sponge coated is at its time exhausted and the sponge needs to be replaced. You can see this best when the water is slowly yellowish, then it is time for a change. The sponge filter is suitable for fresh and sea water.
was ich nicht so toll fand, dass die...
was ich nicht so toll fand, dass die Schwämme dieses Mal nicht verpackt waren