Active carbon filter pads for the EHEIM external filter classic 2211. Active carbon pads are used after medications, to reducing pollution or smells. Packing contains 3 pieces..https://www.aquaristikshop.com/aquaristic/EHEIM-Active-carbon-pads-for-2211/2628110/
- Allan K. wrote about EHEIM Active carbon pads for 2211 in 2016:
Easy to use filter insert with activated carbon.