--- product_id: 534499185 title: "pH Up for Plants | Hydroponics and Soil pH Adjustment | Concentrated Potassium Hydroxide Formula | Raises Nutrient Solution Levels for Strong Root Growth and Stability | 32 Ounce" brand: "humboldts secret" price: "192.92 DT" currency: TND in_stock: true reviews_count: 8 category: "Humboldts Secret" url: https://www.desertcart.tn/products/534499185-ph-up-for-plants-hydroponics-and-soil-ph-adjustment-concentrated store_origin: TN region: Tunisia --- # Optimizes pH 5.5-6.5 for nutrient uptake Versatile for soil & hydroponics Highly concentrated KOH formula pH Up for Plants | Hydroponics and Soil pH Adjustment | Concentrated Potassium Hydroxide Formula | Raises Nutrient Solution Levels for Strong Root Growth and Stability | 32 Ounce **Brand:** humboldts secret **Price:** 192.92 DT **Availability:** ✅ In Stock ## Summary > 🌿 Elevate your grow game—because your plants deserve precision and power! ## Quick Answers - **What is this?** pH Up for Plants | Hydroponics and Soil pH Adjustment | Concentrated Potassium Hydroxide Formula | Raises Nutrient Solution Levels for Strong Root Growth and Stability | 32 Ounce by humboldts secret - **How much does it cost?** 192.92 DT with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.tn](https://www.desertcart.tn/products/534499185-ph-up-for-plants-hydroponics-and-soil-ph-adjustment-concentrated) ## Best For - humboldts secret enthusiasts ## Why This Product - Trusted humboldts secret brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Precision pH Control:** Fine-tune your nutrient solution with a potent potassium hydroxide formula for optimal plant growth. - • **Concentrated & Economical:** A little goes a long way—maximize value with a powerful 32 oz bottle that outperforms diluted competitors. - • **Root Strength & Stability:** Promotes robust root development and consistent nutrient absorption across all growth stages. - • **Clean & Professional Grade:** Dye-free, additive-free formula crafted by experts to ensure reliable, stable pH adjustments every time. - • **Universal Growing Compatibility:** Seamlessly supports soil, coco, hydroponics, aquaponics, and DWC systems—one solution for all your plants. ## Overview Humboldts Secret pH Up is a concentrated potassium hydroxide liquid designed to precisely raise and stabilize pH levels between 5.5 and 6.5 in soil and hydroponic systems. Suitable for a wide range of growing methods, it enhances nutrient uptake and root health, ensuring steady, predictable plant growth. Packaged in a 32-ounce bottle, this professional-grade, additive-free formula delivers reliable performance for serious gardeners and hydroponic enthusiasts. ## Description desertcart.com : Humboldts Secret pH Up for Plants | Hydroponics and Soil pH Adjustment | Concentrated Potassium Hydroxide Formula | Raises Nutrient Solution Levels for Strong Root Growth and Stability | 32 Ounce : Patio, Lawn & Garden Review: Decent price very strong, way better than most others pH solutions - Decent price quality product from Humboldt very easy to use very powerful and effective just like it's partner pH down a few drops goes a long way may be a little pricey compared to other brands but you will use a lot less than other brands Review: Super diluted worthless labeled as pH down on the back side. - Look at all the other one star reviews!!! There's a very good reason! This stuff is diluted trash. If not just straight up water! Absolute garbage DO NOT BUY! The people that are selling this need to pull on Epstein! The back label of this product is clearly for pH down and not PH up. So that's number one. Number two is that it only has a TDS of 1030. There is no way on Earth that pH up should have a TDS that low. It literally does nothing to the nutrient solution.. this is insane that this product was sold like this for those two reasons. Unbelievable! Apparently Humboldt's Secret is dilution, and ripping people off. This is some S I'd expect meth addicts to do! ## Features - Packaging Update: You may receive previous or updated packaging during our transition. Same formula, same performance. Improves Nutrient Absorption - Our Humboldts Secret pH Up allows gardeners to raise nutrient levels with accuracy so users of pH Up can reach the ideal range plants need for steady development. It promotes healthier roots, better nutrient movement, and consistent growth across all stages without disrupting the growing medium. - Supports All Growing Methods: This solution works across soil, coco, hydroponics, aquaponics, and DWC systems, helping maintain balanced conditions using pH Up for plants. It supports vegetables, flowers, trees, shrubs, and lawns by ensuring they receive nutrients efficiently for steady and predictable growth. - Reliable Stability for Hydroponic Systems: Its clean, highly concentrated formula allows controlled adjustments when pH Up hydroponics support is needed. Adding a small amount at a time helps maintain steady levels, supporting healthy development throughout the entire cycle and reducing risks linked to inconsistent nutrient availability. - Maintains Balanced Environment: Made with commercial grade potassium hydroxide, this solution delivers dependable correction for hydroponic pH balance needs. It helps maintain the proven ideal range of 5.5 to 6.5 so plants can thrive from early growth through flowering without affecting the integrity of the nutrient solution. - Expert Made Quality You Can Trust: Formulated by experienced professionals, this solution uses high quality ingredients to support precise adjustments for users managing pH controller hydroponics setups. Its dye free, additive free composition provides consistent performance across all compatible plant environments and growing methods. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B0C5B8BG3K | | Best Sellers Rank | #120,528 in Patio, Lawn & Garden ( See Top 100 in Patio, Lawn & Garden ) #2,490 in Garden Fertilizers | | Brand Name | Humboldts Secret | | Coverage | Medium | | Customer Reviews | 4.0 4.0 out of 5 stars (106) | | Global Trade Identification Number | 00706199757410 | | Item Form | Liquid | | Item Weight | 32 Ounces | | Manufacturer | Humboldts Secret | | Model Number | 706199757410 | | Target Species | plants | | UPC | 706199757410 | | Unit Count | 32.0 Ounce | ## Product Details - **Brand:** Humboldts Secret - **Global Trade Identification Number:** 00706199757410 - **Item Form:** Liquid - **Item Weight:** 32 Ounces - **Manufacturer:** Humboldts Secret ## Images ![pH Up for Plants | Hydroponics and Soil pH Adjustment | Concentrated Potassium Hydroxide Formula | Raises Nutrient Solution Levels for Strong Root Growth and Stability | 32 Ounce - Image 1](https://m.media-amazon.com/images/I/713nz7a6ruL.jpg) ## Available Options This product comes in different **Size** options. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Decent price very strong, way better than most others pH solutions *by S***N on February 15, 2026* Decent price quality product from Humboldt very easy to use very powerful and effective just like it's partner pH down a few drops goes a long way may be a little pricey compared to other brands but you will use a lot less than other brands ### ⭐ Super diluted worthless labeled as pH down on the back side. *by J***F on October 30, 2024* Look at all the other one star reviews!!! There's a very good reason! This stuff is diluted trash. If not just straight up water! Absolute garbage DO NOT BUY! The people that are selling this need to pull on Epstein! The back label of this product is clearly for pH down and not PH up. So that's number one. Number two is that it only has a TDS of 1030. There is no way on Earth that pH up should have a TDS that low. It literally does nothing to the nutrient solution.. this is insane that this product was sold like this for those two reasons. Unbelievable! Apparently Humboldt's Secret is dilution, and ripping people off. This is some S I'd expect meth addicts to do! ### ⭐⭐⭐⭐⭐ Works great *by C***Z on March 12, 2026* Good stuff ## Frequently Bought Together - Humboldts Secret pH Up - Hydroponic pH Up - pH Up for Plants to Stabilize Nutrient - Plant pH Adjustment - Plant Nutrient pH Levels Optimizer (32 Ounce) - Humboldts Secret pH Down | Liquid pH Plant Balancer for Soil & Hydroponics Growing System - Humboldts Secret Set of A & B Liquid Hydroponics Fertilizer - World's Best Nutrient System – Hydroponic Nutrients for Outdoor, Indoor Plants – Supports Vegetative and Flowering Stages of Plants --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.tn/products/534499185-ph-up-for-plants-hydroponics-and-soil-ph-adjustment-concentrated](https://www.desertcart.tn/products/534499185-ph-up-for-plants-hydroponics-and-soil-ph-adjustment-concentrated) --- *Product available on Desertcart Tunisia* *Store origin: TN* *Last updated: 2026-06-05*