What does acid-neutralising filter media mean in practice?
Dissolves by reacting with acidic water, raising pH and alkalinity and usually increasing calcium or magnesium content.
When does it matter?
With high CO2, it requires long contact and frequent refilling, and the effect may vary with flow.
Which solutions are related to it?
Acidity and EBCT are calculated, the composition of the medium is selected and pH and layer height are regularly measured.