EHEIM classic filter bucket EM250 / 350/600 at the bottom of the tank outside the filer quartz models cotton ball paragraph|bucket lid|bucketbucket pin - AliExpress
Fine/coarse filter pads | EHEIM GmbH & Co. KG. Leading aquarium manufacturer.
Eheim Classic 2211 External Filter Bucket Aquarium Water Plant Fish Tank Mini Nano Made In Germany 5w 300l Qmax Quick Release - Filters & Accessories - AliExpress