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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 | #61,199 in Patio, Lawn & Garden ( See Top 100 in Patio, Lawn & Garden ) #137 in Hydroponic Nutrients & Additives |
| Brand | Humboldts Secret |
| Brand Name | Humboldts Secret |
| Coverage | Medium |
| Customer Reviews | 4.7 out of 5 stars 485 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 |
D**O
My go-to
Lowered my PH just like it said it would.
T**D
Super effective price was great
Great product doesn't take much to get everything inline with Humboldt's amazing products
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
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.
D**R
S
Great product, better then I thought
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
R**H
This stuff is great!
The pH on my cannabis plants was at about 7 1/2 almost 8. They were not taking up nutrients like they should, which is obvious by their stunted growth and within one water and using pH down it… Problem solved! Perfect, 6.7 PH. All I did was mix my feeding solution take the pH, Then add pH down until the pH was at around 3 1/2 which I figured is half of the approximate 6 1/2 I was looking to get. And it got me there right on the line. The only problem with this product is there are no real directions. You kind of have to do trial by error and let me tell you folks please err on the side of caution. This is straight acid that will definitely burn your plants so do not apply this directly. Do not apply this in high doses. I would say start with a cap full in a gallon of your feeding solution and then go from there, adding more until you get to where you want to be. That said, I kind of understand why the directions are the way they are because every solution is a different pH, so there is no perfect amount. It’s always going to be based on your water quality and the pH of your nutrient base. At any rate, I will tell you that this product works absolutely great. I would avoid getting it on the plant itself and apply only to the soil. Happy growing.✌️🙏❤️🤩🌱🌳
G**Y
It's better to get this big 1 it works better than the smaller bottle.
Perfect for plant health and it works for meny grows .
Trustpilot
1 month ago
1 month ago