The intensity of aquaculture is increasing day by day in Bangladesh. To meet the increasing demand new technologies are being used to enhance production. Recently the use of fish medicines in aquaculture is also seen among the farmers of our country. In the present study, the propensity of using harmful gas controller and oxygen supplier on the basis of farmers’ age, educational status and land ownership were studied. The study was conducted in six upazilas of Noakhali district, Bangladesh. Data were collected through questionnaire survey of 77 fishermen by interviewing with them and discussing with the upazila fisheries officer, retailers of fish medicines and representatives of pharmaceutical companies and market survey. The propensity of using harmful gas controller was higher than any other medicines used by farmers of all upazilas surveyed. In the case 36% farmers showed their tendency to use, because most of the farmers had problems with harmful gases in their ponds. In case of oxygen supplier 22% farmers used oxygen in their ponds. Most of the farmers’ age ranged between 26-35 and 36-45 years who showed more tendencies to apply both medicines in their ponds. It was also found that the farmers whose education level was above higher secondary school certificate (HSC) showed more tendency to apply medicines. Farmers who were rich having 6 and above acres of land showed more tendencies than poor and moderately rich farmer to apply medicines in their ponds. The study clearly showed that, there was a relationship between farmers’ age, educational status and land ownership with the adoption of harmful gas controller and oxygen supplier.