Plants absorb nitrates from the soil and use these to build up proteins. The plant may be eaten by an animal, and its biomass used to produce animal protein. Decomposers break down the bodies of dead organisms, urine and faeces resulting in nitrogen being returned to the soil as ammonia.

Which plants absorb the most nitrates?

Hornwort was the plant that absorbed the most Nitrate in 50 mg/L of Nitrate concentration (18.72 mg/L in a day), while Anacharis was the one that absorbed the most Nitrate in 2.5 mg/L of Nitrate (1.32 mg/L in a day).

Do aquarium plants absorb nitrate?

More plants! Some aquarium plants are excellent at absorbing nitrates from the water and even replace them with oxygen. This is great for all the creatures in your tank and will help to keep the water fresh and healthy.