Newmarket, Ontario (Head Office)
1175 Stellar Drive, Unit #5
Newmarket, ON L3Y 7B8
- Mon10:00am–6:00pm
- Tue10:00am–6:00pm
- Wed10:00am–6:00pm
- Thu10:00am–6:00pm
- Fri10:00am–6:00pm
- Sat10:00am–4:00pm
- SunClosed
$0.00 CAD
Out of stock at your chosen pickup location? We'll automatically transfer inventory from another location so it's ready at your selected pickup location. (Ontario Only)
Couldn't load pickup availability
Dutch Nutrient pH Down 20% Phosphoric Acid is a phosphoric-acid pH down product for lowering solution pH when levels drift high and tighter pH control is the goal.
This is a pH adjuster built for straightforward pH management. If you want clean, predictable shifts in solution pH without extra features, this product keeps the job simple: it brings pH down. It’s also a practical pH reducer for growers who monitor pH regularly and want a dedicated pH control product for routine stability.
Dutch Nutrient pH Down 20% Phosphoric Acid is positioned as highly concentrated, which makes it an efficient choice for ongoing pH correction in day-to-day gardening. The focus stays on reliable pH control, with a no-fuss, purpose-built profile that fits growers who prefer direct tools over multi-purpose additives. For shoppers searching “phosphoric acid pH down” or “pH down product,” this is the classic style of pH decreaser designed to keep solution pH in a range that supports consistent nutrient availability.
The facts layer is clean and minimal: this is a phosphoric acid-based pH adjuster, and it is derived from phosphoric acid. That single active input is the core of what the product is, which is why it stays easy to understand and easy to match to the right need in a garden. It’s built to support stable pH control in gardens where pH drift can cause performance to feel inconsistent.
Dutch Nutrient pH Down 20% Phosphoric Acid is presented as suitable for hydroponics, soil, coco, and soilless setups, which makes it easy to keep one dedicated pH down option on hand across common grow styles. This is a good fit for home gardeners and growers who want a phosphoric-acid pH down product for consistent pH control and predictable solution pH management.
| Phosphoric Acid (P2O5) | 20.0% |
|---|
Phosphoric acid helps supply usable phosphorus for root development and plant energy transfer while also lowering nutrient-solution pH, making it uniquely valuable because it supports growth and improves nutrient availability at the same time—unlike many other phosphorus sources that don’t strongly influence pH.
Yes, it can if it pushes phosphorus too high or drives pH too low, because both conditions can reduce the plant’s ability to take up key micronutrients and calcium even when they’re present in the feed, which makes phosphoric acid uniquely powerful compared with slower, gentler phosphorus sources.

1175 Stellar Drive, Unit #5
Newmarket, ON L3Y 7B8
106 Saunders Road, Unit #2A
Barrie, ON L4N 9A8
719 Krosno Boulevard
Pickering, ON L1W 1G4
915 McLeod Avenue, Unit #4
Winnipeg, MB R2G 0Y4