Square solid basic | EHEIM GmbH & Co. KG. Leading aquarium manufacturer.
Eheim Experience 250 (EH2424) - Aquaristic Online
Amazon.com : LTWHOME Replacement Blue Coarse and White Fine Filter Pads Sets Fit for Eheim 2616220 Professional 2222/2324 and Experience 150/250/ 250T (Pack of 9pcs,3 Sets) : Pet Supplies
Eheim eXperience Thermofilter 250T 2124020 - External filter for aquariums up to 250L without filler