Flourish Excel is not a fertilizer per say. It is a liquid algaecide that the main ingredient can also be used by plants to replace CO2 in the water. So in a sense it is a liquid CO2 substitute. Flourish Excel has 2 benefits in that it provides the liquid CO2 substitute while also killing/inhibiting Algae. This makes sure that the algae aren't consuming the good stuff that the plants need.
I have read some where that you should not use Flourish Excel with moss balls as they are just a form of algae and Flourish is suppose to suppress algae I need advice as what to do cause I have a whole lot of Flourish Excel and if I can use it what's a good alternative???????