Corosex / Flomag can be mixed with Calcite to treat waters as low as 4.0 Ph. Up flow filters are recommended unless the water is 5 grains hard. A Minimum of 50% calcite is recommended to prevent cementing.
By neutralizing the free carbon dioxide in water Corosex can correct red water conditions and render it to a non-corrosive condition. Corosex being a reactive magnesium oxide is used most effectively where pH correction is substantial or high flow conditions are in use. Corosex being soluble to acidity will have to be replenished periodically. Please note under certain conditions Corosex may over correct and create a basic condition.
Corosex / Flomax may be effectively combined with Calcite to combine a high flow neutralization properties of Corosex along with the slowing reacting low flow properties of Calcite reducing potentially high basic properties due to over correction.
We recommend Corosex / Flowmag to be blended with Calcite at a ratio or 90% Calcite and 10% Corosex / Flomag or 80% Calcite to 20% Corosex / Flomag. Corosex / Flomag works better when used with a backwashing neutralizer filter.