ordinarily require pellets. The Nitrates produced by the aquarium from uneaten food and fish waste is itself sufficient for the plants.
However, if the tank is new or if a large number of plants are introduced. Fertilizer Pellets may be necessary as supplements.
Fertilizer Pellets are loaded with nutrients. They release the nutrients slowly over a period of weeks. Since, they are buried within the substrate, algae cannot access them.
They are ideal for rooted plants.