PROBLEM TO BE SOLVED: To easily, comfortably and properly perform all cleaning work inside a water tank such as water exchange, cleaning inside bottom sand, removal of dirt and excrement, movement of the bottom sand, or cleaning of water tank wall surface, and cleaning work inside the water tank corresponding to a situation of size of the water tank or a quality/water level difference of the bottom sand.SOLUTION: In this siphon pump for an aquarium fish, a bellows-like or tubular suction hose 2 and a discharge hose 3 are respectively communicated with and connected to both ends of a siphon pump part 1. In the siphon pump, the tip of the hose on a suction side is provided with a transparent, non-bendable, and straight tube-like support pipe 4, the tip of the support pipe 4 is formed with a cleaning unit connection part, the cleaning unit connection part is provided with an O-ring or a resilient packing to prevent air leakage, the support pipe 4 is communicated with and connected with one of various kinds of cleaning units 7, 7a, 7b, 7c, 7d wherein the diameter or the shape of an opening part of the cleaning unit is varied according to a use or an object through a screw part or a tightly contactable connection part, and each cleaning unit 7, 7a, 7b, 7c, 7d is detachable and is exchangeable.COPYRIGHT: (C)2013,JPO&INPIT【課題】観賞魚用水槽において、水換え、底砂内の清掃、ゴミ・汚物の除去、底砂の移動、水槽壁面の掃除などあらゆる水槽内の清掃作業と水槽の大小や底砂の質・水位差の状況に応じた水槽内の清掃作業を簡単で快適で的確に行えるようにする事を目的とする。【解決手段】サイホンポンプ部1の両端に蛇腹状もしくは筒状の吸引ホース2と排出ホース3を夫々連通接続したサイホンポンプにおいて、吸引側のホースの先端に透明で屈曲しない直管状の支持パイプ4を設けて連通させ、該支持パイプ4の先端に清掃ユニット接続部を設け、該清掃ユニット接続部にOリングや弾力性のあるパッキンを設けてエア漏れを防ぎ、ネジ部あるいは密接可能な接続部を介して清掃ユニットの開口部の口径や形状を用途や目的に応じて変化させた各種清掃ユニット7、7a、7b、7c、7dと連通接続し、かつ脱着及び取替え可能であることを特徴とする観賞魚用サイホンポンプ。【選択図】 図1
