Hy-Gen pH Down 250ml

HY-GEN® pH DOWN contains 85% food grade Orthophosphoric acid and will to LOWER the pH when added to your growing system. It’s recommended that you prepare your nutrient solution first and allow it to equilibrate; this can take up to 60 minutes depending on the size of your tank. Always add the required amount of pH DOWN to a small separate container of water and mix well before adding to your nutrient tank.