1/2 cubic foot. Low pH, Acidic water slowly dissolves Calcite media, to help raise the pH from 5.0 to 7.0. As the Calcite media dissolves, it will also increase the hardness of your water. (I.E. If your pH level is 6.0, the Calcite media will increase your water hardness 4 – 5 grains per gallon, [...]

Corosex (aka – FloMag)….(Magnesium Oxide), can be mixed with Calcite to treat very low acidic waters, ranging from 4.5 – 6.0 pH. Corosex may overcorrect the pH level and create a high pH condition. For this reason, we recommend mixing a 2 : 1 ratio of Calcite to Corosex. (i.e. 2 Parts Calcite with 1 [...]