Plants

Excess phosphates

Understand symptoms, possible causes and treatment paths so you can act methodically.

Excess phosphates

Symptoms

Brown or black coloring of leaves due to the formation of ferrous phosphates. Iron deficiencies. If there is also an excess of nitrates, explosive proliferation of algae.

Cause (s)

Water changes are neglected.

Remedy

Do not forget to change the water regularly, which eliminates excess phosphates.