DENDROLOGY

Detailed explanation-1: -Aquatic plants benefit aquariums by absorbing carbon dioxide (CO2) and ammonia (NH3) that your fish generate, and in return, aquatic plants produce oxygen (O2) that your aquatic fish can utilize for respiration.

Detailed explanation-2: -During daylight hours plants normally produce more oxygen than they consume, thus providing oxygen for the fish and other organisms in the pond. Oxygen depletions are the most common cause of fish kills in ponds.

Detailed explanation-3: -Aquatic plants depend on carbon dioxide for life and growth, just as fish depend on oxygen. Plants use carbon dioxide during the process of photosynthesis.

Detailed explanation-4: -Oxygen in ponds comes from two sources – photosynthesis and diffusion from the air. The most important source is photosynthesis, which is the process plants use for manufacturing food. In the presence of sunlight, plants (especially algae) add oxygen to water as a by-product of photosynthesis.