--- product_id: 106036644 title: "Humboldts Secret Base A & B Liquid Hydroponic Fertilizer | Complete Hydroponic Nutrients for Indoor and Outdoor Plants | Supports Healthy Vegetative Growth and Flowering Stage | 8 Ounce Set" brand: "humboldts secret" price: "388 kr" currency: DKK in_stock: true reviews_count: 8 category: "Humboldts Secret" url: https://www.desertcart.dk/products/106036644-humboldts-secret-base-a-and-b-liquid-hydroponic-fertilizer-complete store_origin: DK region: Denmark --- # Full-spectrum nutrients NPK+Ca+Mg 8 oz liquid formula Two-part A & B system Humboldts Secret Base A & B Liquid Hydroponic Fertilizer | Complete Hydroponic Nutrients for Indoor and Outdoor Plants | Supports Healthy Vegetative Growth and Flowering Stage | 8 Ounce Set **Brand:** humboldts secret **Price:** 388 kr **Availability:** βœ… In Stock ## Summary > 🌱 Unlock your garden’s secret weapon for unstoppable growth! ## Quick Answers - **What is this?** Humboldts Secret Base A & B Liquid Hydroponic Fertilizer | Complete Hydroponic Nutrients for Indoor and Outdoor Plants | Supports Healthy Vegetative Growth and Flowering Stage | 8 Ounce Set by humboldts secret - **How much does it cost?** 388 kr with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.dk](https://www.desertcart.dk/products/106036644-humboldts-secret-base-a-and-b-liquid-hydroponic-fertilizer-complete) ## 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 - β€’ **All-Stage Plant Power:** Supports healthy vegetative growth and vibrant flowering for herbs, veggies, and flowers alike. - β€’ **Versatile Growth Support:** Optimized for hydroponics, soil, coco coir, and all indoor/outdoor setups. - β€’ **Clean & Clog-Free Formula:** pH-balanced, fully water-soluble nutrients that won’t block lines or leave residue. - β€’ **Effortless Weekly Feeding:** Mix equal parts Base A & B for consistent, no-guesswork nutrition every watering. - β€’ **Trusted by Pros & Enthusiasts:** Top-rated with 4.5 stars and proven 50:1 yield-to-nutrient ROI in grow tents and commercial setups. ## Overview Humboldts Secret Base A & B is a premium 8-ounce liquid hydroponic fertilizer delivering a balanced, full-spectrum nutrient formula including nitrogen, phosphorus, potassium, calcium, and magnesium. Designed for simplicity and versatility, this two-part system ensures consistent feeding for all plant stages across hydroponic, soil, and coco coir environments. Trusted by both home growers and commercial cultivators, it promotes vigorous vegetative growth and vibrant flowering without clogging irrigation lines. ## Description desertcart.com : Humboldts Secret Base A & B Liquid Hydroponic Fertilizer | Complete Hydroponic Nutrients for Indoor and Outdoor Plants | Supports Healthy Vegetative Growth and Flowering Stage | 8 Ounce Set : Patio, Lawn & Garden Review: Hugely Successful Grows with Humboldt's Secret - I use the whole Humboldt's Secret nutrient line on plants grown indoors in tents with automated lighting, circulation and exhaust fans and manual feeding, watering, temperature and humidity controls. My flowers are cup quality, every time. Top quality nutrients, broad spectrum, easy schedule and dosing and super reasonable compared to other brands with comparable offerings. On average, I'd say my return on investment in yield:nutrient is about 50:1. Hard to argue that. I'm a believer. Review: Hydroponic nutrient - This plant food works great with the plants in our grow tent, easy to measure and introduce into DWC! Very fast shipping, although the company needs to find a better way to seal container as they leaked a bit! ## Features - Packaging Update: You may receive previous or updated packaging during our transition. Same formula, same performance. Fuel Plants With Complete Nutrition - Humboldts Secret Base A and B delivers a full-spectrum formula with nitrogen, phosphorus, potassium, calcium, and magnesium. These premium plant nutrients support steady development, vibrant leaves, and bold blooms for vegetables, herbs, flowers, and indoor plants. Our formula is ideal for those who want lasting plant health and consistent feeding every single week. - Simplify Your Feeding Routine: Our easy two-part system requires no complex schedules or guesswork. Just mix equal parts of Base A and B with every watering. This consistent approach supports better absorption and stronger plants across hydroponic gardening, coco coir, or traditional soil setups. Measuring and mixing take just seconds each time. - Compatible With Any Grow Setup: Humboldts Secret nutrients are built for results in deep water culture, aquaponics, pots, raised beds, or coco. Our Base A and B are trusted as reliable hydroponic nutrients by both home growers and commercial cultivators. Works great with timers, tanks, or hand watering systems. - Professional Results Without the Hassle: Our pH-balanced, fully water-soluble formula mixes fast and clean. It won’t clog lines or leave residue, making it ideal for hand-watering or automated systems. Humboldts Secret delivers dependable liquid plant food for every stage of plant development. Start seeing results in just a week. - Support Every Plant With One Formula: From leafy greens and flowering plants to trees, herbs, and houseplants, our Base A and B system delivers the core nutrients all plants need. Use this proven fertilizer for indoor plants across your entire garden for consistent, visible results. Safe for hydroponics, soil, containers, or beds. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B07NBKJYDK | | Best Sellers Rank | #5,641 in Patio, Lawn & Garden ( See Top 100 in Patio, Lawn & Garden ) #272 in Garden Fertilizers | | Brand | Humboldts Secret | | Customer Reviews | 4.5 4.5 out of 5 stars (3,359) | | Is Discontinued By Manufacturer | No | | Item Form | Liquid | | Item Weight | 8 ounces | | Item model number | 15214014529602 | | Liquid Volume | 16 Fluid Ounces | | Manufacturer | Humboldts Secret | | Package Dimensions | 6.42 x 4.76 x 2.32 inches | | Specific Uses For Product | Hydroponics | | UPC | 706199757335 | | Unit Count | 8 Fluid Ounces | ## Product Details - **Brand:** Humboldts Secret - **Item Form:** Liquid - **Item Weight:** 8 Ounces - **Liquid Volume:** 16 Fluid Ounces - **Specific Uses For Product:** Hydroponics ## Images ![Humboldts Secret Base A & B Liquid Hydroponic Fertilizer | Complete Hydroponic Nutrients for Indoor and Outdoor Plants | Supports Healthy Vegetative Growth and Flowering Stage | 8 Ounce Set - Image 1](https://m.media-amazon.com/images/I/71WyKv-5XfL.jpg) ## Available Options This product comes in different **Size** options. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Hugely Successful Grows with Humboldt's Secret *by J***Z on January 20, 2026* I use the whole Humboldt's Secret nutrient line on plants grown indoors in tents with automated lighting, circulation and exhaust fans and manual feeding, watering, temperature and humidity controls. My flowers are cup quality, every time. Top quality nutrients, broad spectrum, easy schedule and dosing and super reasonable compared to other brands with comparable offerings. On average, I'd say my return on investment in yield:nutrient is about 50:1. Hard to argue that. I'm a believer. ### ⭐⭐⭐⭐⭐ Hydroponic nutrient *by K***S on February 15, 2026* This plant food works great with the plants in our grow tent, easy to measure and introduce into DWC! Very fast shipping, although the company needs to find a better way to seal container as they leaked a bit! ### ⭐⭐⭐⭐⭐ Great start! *by C***T on February 24, 2026* The nutrients got my plants off to a great start and they’re thriving. ## Frequently Bought Together - 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 - General Hydroponics pH Control Kit For A Balanced Nutrient Solution - VIVOSUN Digital pH and TDS Meter Kits, 0.01pH High Accuracy Pen Type pH Meter Β± 2% Readout Accuracy 3-in-1 TDS EC Temperature Meter for Hydroponics, Pool and Aquarium, Yellow Blue, UL Certified --- ## Why Shop on Desertcart? - πŸ›’ **Trusted by 1.3+ Million Shoppers** β€” Serving international shoppers since 2016 - 🌍 **Shop Globally** β€” Access 737+ million products across 21 categories - πŸ’° **No Hidden Fees** β€” All customs, duties, and taxes included in the price - πŸ”„ **15-Day Free Returns** β€” Hassle-free returns (30 days for PRO members) - πŸ”’ **Secure Payments** β€” Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** β€” Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.dk/products/106036644-humboldts-secret-base-a-and-b-liquid-hydroponic-fertilizer-complete](https://www.desertcart.dk/products/106036644-humboldts-secret-base-a-and-b-liquid-hydroponic-fertilizer-complete) --- *Product available on Desertcart Denmark* *Store origin: DK* *Last updated: 2026-04-27*