Using the correct pH in your nutrient solution is essential, too high or low and it could have a detrimental effect on your plants, so ideally the level should be between 5.8 – 6.2.
When mixing up nutrient solutions, pH can fluctuate, especially if using a Silicon supplement which can raise pH by around 2, but with just a couple of drops of Growth Technology’s pH Down, it can bring it down to a more accepted level, and one that your plants will love you for.
Growth Technology pH Down is highly concentrated so only a few drops can dramatically reduce the pH, therefore its recommended that a small amount is diluted in just a few milliliters of water first, then added to your nutrient solution at the rate of a drop at a time.
NEVER use pH Down and pH Up together! If you accidentally use too much and the pH drops to below 5.8, its advised that you dispose of the solution and make a fresh batch as mixing pH Down and pH Up can have a chemical reaction and render it unusable.
With pH Down being 81% Phosphoric Acid, extreme care should be taken when using pH Down, if it comes into contact with skin, eyes, clothing or even swallowed, rinse with clean water immediately and always read the safety notes before use.
You should also make sure that your pH meter or pen is kept clean, rinse between use and regularly calibrate it using a known pH liquid, such as Buffer 7, so it always reads accurately.