Growth Technology PH Down
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.
Health & Safety:
This liquid needs safe and careful handling:
- Always wear gloves and eye protection when handling aggressive liquids
- Always store in locked cupboards
- KEEP AWAY FROM CHILDREN
- pH UP and pH DOWN should be diluted before use – please see the link on the side of this page for Instruction on Handling Aggressive Liquids.
- The two most important factors in water and nutrient management are pH and conductivity, and a good understanding and command of these variables is essential for successful hydroponic gardening.
pH is the measure of acidity or alkalinity of an aqueous solution. If a solution is acidic then it has a pH in the range of 0 to 6.9. If a solution is alkaline then it has a pH in the range of 7.1 to 14. Pure water or deionised water is neutral at pH 7.0. The ideal pH for most hydroponic gardening applications is between 5.8 and 6.2, except for Rockwool cultivation, which likes a slightly lower pH of about 5.5.
- LEARN MORE: pH is the measure of acidity or alkalinity of an aqueous solution. The term pH refers to the potential hydrogen/hydroxyl ion content of a solution. Solutions ionise into positive and negative ions. If a solution has more hydrogen (positive) ions than hydroxyl (negative) ions then it is acidic and has a pH in the range of 0 to 6.9. Alternatively, if a solution has more hydroxyl (negative) ions than hydrogen (positive) ions then it is alkaline with a pH in the range of 7.1 to 14. Pure water and deionised water has a balance of hydrogen (H ) and hydroxyl (OH-) ions, and is therefore pH neutral (pH 7).