Flourish Excel is a source of bioavailable organic carbon. All plants require a source of carbon. This is typically obtained from CO2, but, may also be derived from simple organic compounds.

KEY FEATURES:
Bioavailable organic carbon source for the planted aquarium
Use as an alternative to CO2 injection or in addition to it
Introduces photosynthetic intermediates
DIRECTIONS:
On initial use or after a major (> 40%) water change, use 1 capful (5mL) for every 40L (10 US gallons). Thereafter use 1 capful for every 200L (50 US gallons) daily or every other day. For smaller dosing please note that each cap thread is approximately 1mL.