This eheim filter media set includes 2 x white ehfisynth 1 x coarse blue filter padsr these will mechanically filter small particles from the water passing through the compatible filtersr the pack containsr 1 x coarse sponge padr 2 x fine filter wool padsr compatible withr eheim professional 2222 2322 2224 and 2324 150 150t 250t and 250tr please note these filters are not suitable for the professional 3 series