sera guide - Splendid plants in your aquarium

ments by the plant) and micro nutrients, often also called trace elements (low re- quirements). Trace elements include: Iron (Fe) Copper (Cu) Manganese (Mn) Zinc (Zn) Boron (B) Molybdenum (Mo) Vanadium (V) These trace elements are taken up only in very small amounts, but they are just as im- portant as the macro nutrients. For instance, iron is part of an enzyme required for the synthesis of chlorophyll. Molybdenum makes the very important processing of nitrate possi- ble. Manganese and vana- dium are required for trouble free enzyme activity. No plant can grow without these substances. 7