Organic carbon solution for plants from Seachem.

• Promotes ferrous iron (Fe +2) which is more absorbable than ferric iron (Fe +3)
• All plants require a carbon source, and Excel can enhance low levels of gaseous CO2 in the aquarium, or even completely replace it
• Does not cause any pH disturbance
• Dosage: After a water change, add 10 ml per 80 liters of water. It is recommended to add 1 ml per 40 liters of water daily or every other day