Botanicare Cal-Mag Plus 2.5 Gallon (2/Cs) By installing the in-line Guardian

By installing the in-line Guardian Monitor with mixing chamber kit

Battery life minimum 1 year (or shelf life of battery)

Fully waterproof with auto off function

but any garden can benefit

Botanicare Cal-Mag Plus 2.5 Gallon (2/Cs) By installing the in-line GuardianCal Mag Plus is a highly fortified calcium, magnesium and iron plant supplement formulated to correct common deficiencies. Supplementing your preferred nutrient program with Cal Mag Plus is strongly recommended when using reverse osmosis water and when growing in coco coir based medias to compensate for natural calcium draw. Cal Mag Plus can also be applied as a foliar spray to further enhance growth.