APPLICATION: Upon first use or following a significant water change (greater than 40%), administer 1 capful of Flourish Excel (5 mL) per 40 L (10 US gallons). After this initial application, continue with 1 capful for every 200 L (50 US gallons) on a daily or alternate day basis. If you require smaller doses, be aware that each cap thread is roughly equivalent to 1 mL.
SAFETY: Flourish Excel is completely safe for fish, however if you have Anacharis in an aquarium in which you are dosing Flourish Excel, then it is recommended to use it every other day rather than daily.
CARBON PRODUCTION: All plants require a source of carbon, and Flourish Excel is a great and convenient source of bioavailable organic carbon.
PHOTOSYNTHESIS: Plants must produce longer chain carbon compounds (photosynthetic intermediates). By dosing with Flourish Excel you bypass the involvement of chain carbon compounds, and introduce the already finished, structurally similar compounds.
IRON PRODUCTION: Flourish Excel also possesses iron reducing properties, thus promoting the ferrous state of iron (Fe+2), which is more easily utilized by plants than ferric iron (Fe+3).