Cal-Mag, from California's Emerald Harvest, maintains optimal growth rates by providing a source of calcium and magnesium - two secondary macro nutrients that play hugely important roles in plant health. Cal-Mag will assist with the transport of other nutrients and increase photosynthesis rates, while helping to get the best out of your other boosters during peak flower. Essential stuff! For more information take a look at our Emerald Harvest Blog.

Emervald Harvest Cal Mag

SKU: 02_1848
PriceFrom £19.99