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🌿 Master your grow with precision pH power — because your plants deserve the secret sauce!
Humboldts Secret pH Down is a highly concentrated liquid formula designed to quickly and accurately lower pH levels in soil, coco, and hydroponic systems. Maintaining an optimal pH range of 5.5 to 6.5, it prevents nutrient lockout and promotes healthier, more vigorous plant growth. This commercial-grade phosphoric acid solution is up to 25% stronger than many competitors, ensuring efficient use and consistent results. Trusted by professional growers and made in California, it supports all growing methods for vegetables, flowers, and herbs.
| ASIN | B0BW3G96VV |
| Best Sellers Rank | #44,308 in Patio, Lawn & Garden ( See Top 100 in Patio, Lawn & Garden ) #1,103 in Garden Fertilizers |
| Brand Name | Humboldts Secret |
| Coverage | Medium |
| Customer Reviews | 4.7 4.7 out of 5 stars (483) |
| Item Form | Liquid |
| Item Highlight | Concentrated Phosphoric Acid Solution, Supports Nutrient Uptake, Soil, Coco & Hydroponics, Maintains 5.5-6.5 pH, Easy Feeding |
| Item Weight | 2.6 pounds |
| Liquid Volume | 32 fluid ounces |
| Manufacturer | HS Supplies, LLC |
| Mixing Ratio | a few drops per unit of nutrient solution |
| Model Number | HS-PH-DOWN |
| Number of Items | 1 |
| Number of Packs | 1 |
| Specific Uses For Product | Plant Growth |
| Target Species | plants |
| UPC | 706199757427 |
| Unit Count | 32 Fluid Ounces |
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