1st time tukar filter ni. tak tau plk filter yg no 3 tu akan keluar kotoran warna hitam.. lepas pm saler. br dapat tutorial dia.. filter no 3 x sama macam filter asal ko way. filter ko way 1 in 2 out. filter ni 1 in 1 out.. ape2 pun puas hati. air pun okey. hrga pun berpatutan.