PURPOSE: An oxygen control device is provided to contribute to the growth of fish by easily supplying and measuring oxygen.CONSTITUTION: An oxygen control device comprises multiple oxygen absorption filters(1,2,3) which are detachable from an aquarium. A strong magnet is formed in the upper end of the oxygen control device and collects oxygen by passing air.COPYRIGHT KIPO 2013고순도의 산소를 발생시켜 수족관에 산소를 제대로 공급할 수 있게 하고 산소농도와 pH값 등을 자동적으로 조절할 수 있게 만든 수족관의 산소조절장치.