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Soil guidance: Apply at lighter rates when using soil to prevent over-alkalisation
Plant Magic Plus Oldtimer PK 4-8 works by providing concentrated levels of phosphorous and potassium at a ratio of 4:8
pesticides and pH adjustment products as they are highly resistant to many chemicals
if necessary
Mills Nutrients - CalMag Size:5 Litre Soil guidance: Apply at lighterRaises Levels of Calcium and Magnesium Ideal for Soft Water Areas Mills Nutrients CalMag contains large quantities of calcium and magnesium. It's ideal for growers in soft water areas with a starting EC of below 0. 3, and for growers using reverse osmosis filters to remove impurities. Adding extra phosphorus and potassium in peak flower can sometimes cause calcium and magnesium to get locked out (whatever your water type), and a bottle of CalMag can