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→Chemical control
===Chemical control===
===Chemical control===
For infiltration practices an 'amendment' or chemically reactive 'additive' can help to retain even more phosphorus.
For infiltration practices an 'amendment' or chemically reactive 'additive' can help to retain even more phosphorus. Typically these components would make up 5 to 10% by volume of the filter media mixture.
{{:Additives}}
{{:Additives}}