It is quite unknown that copper is needed in Aquaponics. Like many minerals, if too much is used it will become toxic.
- Copper Sulfate Pentahydrate in 4 ounce packets.
- Copper is necessary in an aquaponics system in small amount for proper plant growth.
- Copper deficiency symptoms include leaves curling and bending downward, a light chlorosis and loss of turgor in young leaves, sunken necrotic spots on leaves, and small leaves.