Hesi pH Minus Growth reduces the pH level (ie. raises the acidity) of nutrient solutions fed to plants in the vegetative phase of development. To avoid adding more phosphorus during the grow phase in the form of phosphoric acid, the manufacturers at Hesi provide a pH Down specifically for the ‘grow’ phase made with only nitric acid, meaning only nitrogen is added. Hesi pH Minus (Down) Grow is a 38% Nitric acid solution. Use in conjunction with a reliable pH meter to optimise the acidity of nutrient solution to ensure maximum nutrient uptake for your plants.
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