A kind of aquarium alternate form filter,The filter includes: a box body,One filter material and a bailing pipe,Wherein,Tray interior has an accommodating space,Accommodating space is penetrated using an opening,Allow filter material that can be put into accommodating space from opening,Or the filter material in accommodating space is replaced from opening,The through-hole being then equipped with below the side side wall of box body in an injection accommodating space,Bailing pipe have a sequentially connected water absorbing section,One conveying section,One mixing section and a water exit end,The water absorbing section periphery system, which is covered with, most blastholes,And penetrated in the accommodating space of box body by through-hole level,Through the turnover of conveying section,And water absorbing section and mixing section are attached,It then enables mixing section that can up do in box portion outside along its side wall with water exit end to extend,It below mixing section is connected with an air inlet pipe again,Air inlet pipe another end system connection gas supply pumping.一種水族箱替換式過濾器，該過濾器包含有：一盒體、一過濾材與一汲水管，其中，盒體內部具有一容置空間，容置空間往上是利用一開口進行穿透，讓過濾材能從開口放入容置空間，或從開口對容置空間中的過濾材進行更換，在盒體的一側邊壁下方則設有一貫入容置空間中的通孔，汲水管具有依序相連的一吸水段、一輸送段、一混合段與一出水段，該吸水段外周係佈滿有多數的入水孔，且由通孔水平穿入盒體的容置空間中，透過輸送段的轉折，並對吸水段與混合段進行連接，則令混合段與出水段能在盒體外部沿著其邊壁往上做延伸，又混合段下方是與一進氣管進行導通，該進氣管另端係連接供氣泵浦。
