3 Acid Down is a liquid pH regulator that will lower and stabilise the pH of a nutrient solution on a long-term basis.
Its dosage will depend on the water quality, the EC level and the type of substrate. In general, the ideal pH value for plants is between 5.4 and 6.5.
When growing and during the vegetation period Hydropassion recommends a pH of 5.6 to allow nitrogen assimilation.
In flowering, around 6.6-6.2 to favour the absorption of phosphorus and potassium.
3 Acid Down can also be used to clean and eliminate salt accumulations in hydroponic or aeroponic systems at the end of the crop. It can then be used pure by soaking for 24 hours.
Mineral acid NF U 42-005
Mineral acid for pH adjustment of mineral nutrient solutions meeting NF U 42-004 standard.
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