# that a change in DOC or CO (or for that matter Aluminium solubility, but Aluminium solubility is not something that is easily controlled) does NOT have any effect on ANC. 
# that once a pH-ANC relation for has been established for a lake the pH-ANC relation can be used to easily calculate the amount of limestone needed to raise lake pH to e.g. 5.5
# not all acid lakes are acid due to human influence since high DOC gives low pH. 
# that the concentrations are multiplied with the charge of the species, hence the unit mol charge per liter