Aquatic plant

The present invention relates to a water-purifying device for an aquarium including a lamination type filter container. According to the present invention, the water purifying device for an aquarium comprises: a water supply pipe for supplying contaminated water in an aquarium to a water purifying container; a bubble generating device for generating bubbles in the contaminated water supplied by the water supply pipe and floating foreign substances; and a water purifying container including a bubble removing pipe connected to the inner side of the water purifying container by being formed at the upper end of the water purifying container to remove foreign substances, in other words, bubbles formed by the bubble generating device. An ultraviolet ray sterilizing lamp is formed between the bubble removing pipe and the bubble generating device in the water purifying container. A microorganism carrier is included on one side of the water purifying container, and a filter unit in which multiple containers having a contaminated water outlet bored thereon are piled up, is installed on one side of the bottom. The contaminated water outlet formed on the container of the filter unit is piled to be connected to the adjacent contaminated water outlet, in a zigzag pattern. So, the contaminated water is discharged through a drain while being purified by passing from the container in the uppermost part to the container in the lowermost part in the longest distance. According to the present invention, the water-purifying device for an aquarium enables t the first purification and sterilization in the water-purifying container by removing contaminants by using bubbles to purify the contaminated water in the aquarium and sterilizing the water in the purifying container by using ultraviolet ray sterilization. Also, the water purifying device for an aquarium can maintain an optimal sterilization state and a purification state by enabling second sterilization by using the microorganism by passing the water through a lamination type filter and second purification by using filtering. 본 발명은 수족관의 오염된 물을 수질정화통에 공급하기 위한 물공급관과 상기 물공급관에 의해 공급된 오염된 물에 기포를 발생시켜 이물질들을 부유시키기 위한 기포발생장치와, 상기 기포발생장치에 의해 발생한 기포에 들러붙은 이물질, 즉 거품을 제거하기 위해 수질정화통의 상단에 형성되어 수질정화통의 내측과 연통되는 거품제거관을 구비하는 수질정화통으로 이루어지는 수족관 정화장치에 있어서, 상기 수질정화통의 내부 기포발생장치와 거품제거관 사이에 자외선살균등을 형성하고, 상기 수질정화통의 일측에는 미생물담체를 구비하고 바닥 일측에 오염수배출구가 천공된 용기가 다수개 적층된 상태의 필터부를 구비하되, 상기 필터부의 용기에 형성된 오염수배출구는 인접한 오염수배출구와는 서로 지그재그로 연통되도록 적층되어 오염수가 최장거리로 최상부의