Description Plants in hydroponic systems function best with a nutrient solution pH of between 5.8 up to 6.2. Growth Technology has a full range of control solutions, essential for the proper management of nutrients in hydroponic systems. These products are manufactured using the purest and most concentrated sources available. Bottled in black and red – the internationally accepted packaging colours for aggressive liquids. Full compliance with all health and safety regulations. Growth Technology pH DOWN contains orthophosphoric acid (H3PO4). The concentration is 81%, which is very strong so handle with care. Some other products on the market are considerably weaker, so check the concentration before buying. This is a very dense liquid and should feel much heavier than water.
