Growth Technology PH Down 81%

Keep your nutrient solution in the right pH range

Growth Technology pH Down is a concentrated phosphoric acid solution used to lower the pH of your nutrient reservoir. Most nutrients and supplementary boosters push pH upward, so a reliable way to bring it back down is essential to keeping feed usable and your plants able to eat.

Fixing poor nutrient uptake caused by incorrect pH

Plants only absorb nutrients properly within a pH range of 5.5 to 6.5. Outside that window uptake suffers even when the feed is correctly mixed, leading to deficiencies, a slump in growth and unhealthy-looking plants. pH Down is a safe, efficient way to correct a solution that's drifted too high and get uptake back on track.

Key Benefits

• Concentrated phosphoric acid: lowers pH effectively in small doses.
• Corrects upward pH drift: counters the rise caused by most nutrients and additives.
• Protects nutrient uptake: holds the solution in the 5.5-6.5 range plants need.
• Prevents deficiencies: avoids the growth slump and poor health that come with incorrect pH.

How to Use

• Mix your nutrients fully, then test the solution's pH.
• Add pH Down a small amount at a time, stirring and retesting between additions.
• Target a reading within 5.5-6.5; add gradually, as it's concentrated and easy to overshoot.
• Always add acid to water, never water to acid, and store out of reach of children.