The right water values are dependent on the fish stock and the plants in the aquarium/pond. Even if the water looks clear it can be contaminated. With bad values diseases or algae can appear in the aquarium/pond. To maintain a healthy aquarium/pond with conditions close to nature it is important to check and adapt the water values regularly. Why test? The well-being of aquarium and pond dwellers and the healthy growth of aquatic plants depend to a large extent on the O2 level being kept as constant as possible. Oxygen is the elixir of life' for all animal organisms. All animals in the aquarium and pond need oxygen to breathe. But the 'invisible helpers' in the aquarium and pond, the bacteria that break down pollutants, also depend on sufficient supplies of oxygen in order to be able to carry out their useful activities. In aquariums and ponds with little or no planting and in marine aquariums the oxygen content always needs to be kept at an adequate balance using technical equipment. The water absorbs oxygen through the water surface. The more the surface moves, the more oxygen is absorbed. When the algae are dying and during an increased use of medications the oxygen content in the water needs to be increased by aeration. JBL Online Laboratory on the JBL website in the main menu under 'Service': Regular monitoring for a healthy aquarium/pond with conditions close to nature. Enter your water values into the JBL Online Laboratory and get an in-depth analysis of your values (free of charge) within seconds. Recommended oxygen content Freshwater aquarium (community aquarium): 5-8 mg/l Lake Malawi/Lake Tanganyika aquarium: 5-8 mg/l Plant aquarium with few fish (aquascaping): 5-10 mg/l Marine aquarium: 5-10 mg/l Pond: 5-10 mg/l.
