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🌿 Unlock your garden’s secret weapon for vibrant growth!
Humboldts Secret pH Down is a professional-grade, highly concentrated liquid formula designed to quickly and precisely lower pH levels in soil, coco, and hydroponic systems. Maintaining an optimal pH range of 5.5 to 6.5, it prevents nutrient deficiencies and supports stronger roots, healthier plants, and increased yields. Proudly made in California with pure phosphoric acid and no additives, this 2.5-gallon solution delivers reliable, efficient results favored by growers worldwide.
| ASIN | B0CQ64MWBL |
| Best Sellers Rank | #61,469 in Patio, Lawn & Garden ( See Top 100 in Patio, Lawn & Garden ) #170 in Hydroponic Nutrients & Additives |
| Brand | Humboldts Secret |
| Brand Name | Humboldts Secret |
| Coverage | Medium |
| Customer Reviews | 4.6 out of 5 stars 486 Reviews |
| Global Trade Identification Number | 00850058984117 |
| Item Form | Liquid |
| Item Highlight | Concentrated Phosphoric Acid Solution, Supports Nutrient Uptake, Soil, Coco & Hydroponics, Maintains 5.5-6.5 pH, Easy Feeding |
| Liquid Volume | 320 fluid ounces |
| Manufacturer | HS Supplies, LLC |
| Model Number | 850058984117 |
| Number of Items | 1 |
| Specific Uses For Product | Plant care, maintaining optimal pH level for plant growth |
| Target Species | plants |
| UPC | 850058984117 |
| Unit Count | 320 Fluid Ounces |
T**D
Super effective price was great
Great product doesn't take much to get everything inline with Humboldt's amazing products
D**O
My go-to
Lowered my PH just like it said it would.
K**D
Good!!!
Good!!!
B**N
Great for tomatoes and peppers.
Been using it for years.
G**Y
Customer service
Great product. Customer service is top notch. Would highly recommend this vendor and product
D**R
S
Great product, better then I thought
E**R
Works well, you need a lot for adjusting the pH of irrigation water
I run a small nursery operation…using this to lower the pH of municipal water for plants works. But i went through a gallon in about two weeks. I don’t want to cause phosphorus buildup so im going to alternate with HCl. This stuff is way more stable than using citric acid.
J**.
It works fabulously
I've been doing hydroponic systems for over 30 years and this product works better the any ph down I've used. PLEASE DON'T SEND VIA USPS
Trustpilot
1 day ago
3 weeks ago