With the increasing use and importance of aquaponics in the commercial and domestic sectors, the awareness of these systems has become more relevant these days. We all may be much familiar with aquaponics systems but generally, we lack technical knowledge and factors affecting the performance of these systems. We should know that productivity and performance of these systems directly affect the revenues and the quality of food production from the aquaponics systems. Unlike hydroponics and aquaculture, bacteria play a key role in the aquaponics systems. They are the link between fish and plants, and for the completion of food chain. Hence, taking care of bacteria, especially all those factors that affect bacterial growth is vital.