The frequency of sampling and observations was carried out every week for 35 days. Water samples were taken weekly from the tank, i.e., reservoir of water before entering into the aquarium. Water samples were analyzed for the content of TAN, nitrite (NO2), nitrate (NO3) and total bacteria. Dissolved oxygen and temperature were measured every week using DO meter TOA 14P, while the pH was measured using pH meter TI 9000. Water quality analysis referred to standard methods of APHA (2008).