AV Macro is a precise formulation with balanced NPK. Periodic use of Macro ensures proper growth of plants balanced water parameters such as nitrates , phosphates and general hardness. Being a concentrate fertilizer, its perfect for heavily planted and bigger tank.
Deficiency results in stunted growth, decreased chlorophyll content , fading or yellowing of leaves, decayed parts of the leaf blades etc.       
 
Note: Leaves become dark- brown upon overdose.