Citric Acid (Non-GMO) — Natural pH Down
Lower the pH of your nutrient solution the clean, organic way. Our food-grade, non-GMO citric acid is a gentle and effective alternative to harsh synthetic pH down products — perfect for growers who care about what goes into their water.
Why use citric acid as pH down?
Most tap and well water comes out of the tap too alkaline for plants to properly absorb nutrients. When pH sits above the ideal range (typically 5.5–6.5 for hydroponics and 6.0–7.0 for soil), key nutrients like iron, phosphorus, and manganese become "locked out" — meaning your plants can't take them up no matter how well you feed them.
Citric acid lowers pH naturally, breaks down cleanly, and won't introduce phosphates or sulfates into your reservoir like phosphoric or sulfuric acid-based pH down products often do.
How to use
- Test your starting pH. Mix your nutrients into your water first, then measure the pH using a reliable pH meter for accurate, repeatable readings.
- Start small. Citric acid is potent. Begin with about ¼ teaspoon per gallon (roughly 1g per 4L), stir thoroughly, and let it settle for a minute.
- Re-test and adjust. Measure again and add more in small increments until you hit your target pH range.
- Check daily. Citric acid is a weak organic acid, so pH can drift back up over a few days, especially in recirculating systems. Re-test and top up as needed.
Tip: For easier dosing, dissolve citric acid in a small amount of warm water first to create a concentrated solution, then add it to your reservoir drop by drop.
Ideal for
- Hydroponics and DWC systems
- Soil and coco coir grows
- Organic and living soil setups
- Compost teas and foliar sprays
- Cleaning and descaling equipment between grows
Specifications
- Form: Fine white crystalline powder
- Purity: Food-grade quality, non-GMO
- Source: Natural fermentation
Compliant for use in organic production
This product complies with Canada's Organic Production Systems General Principles & Management Standards and Permitted Substances Lists (CAN/CGSB-32.310-2026 / CAN/CGSB-32.311-2026), making it suitable for use in certified organic production.
Important notice
While this citric acid is of food-grade quality, it is not packaged in a food-grade facility and is sold strictly for agricultural and horticultural use only. Not intended for human or animal consumption.
Storage & handling
Store in a cool, dry place in a sealed container. Keep out of reach of children and pets. May cause skin or eye irritation — wash hands after handling and avoid direct contact with eyes.
