Fertilizer Pellets are small pellets which are placed in the substrate of planted aquariums to fertilized live plants which are planted. Plants in an aquarium do not
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.