Review on LTWHOME Fish Filter Sponge Media by Vanessa Lee

good value for money but if you want 3 sizes you're out of luck. what i did for my ehiem pro 4 was this: i used a coarse and a thin one on the bottom shell and then rounded off with a 100 micron water expert buffing pad. This completely filled the height of the trays, I still wouldn't have room to add a third panel. I don't really care but some watching my filter pimp who ordered this will be very disappointed as mine came with 2 gears and a fine so 4 stars. They clean my aquarium well! Just have a polishing pad ready