---
product_id: 716798130
title: "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"
brand: "humboldts secret"
price: "1489 kr"
currency: DKK
in_stock: true
reviews_count: 5
category: "Humboldts Secret"
url: https://www.desertcart.dk/products/716798130-set-of-a-and-b-liquid-hydroponics-fertilizer-worlds-best
store_origin: DK
region: Denmark
---

# Complete NPK + Ca & Mg blend Fully water-soluble, no residue Easy 1:1 mix ratio 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

**Brand:** humboldts secret
**Price:** 1489 kr
**Availability:** ✅ In Stock

## Summary

> 🌱 Unlock your garden’s secret weapon for unstoppable growth!

## Quick Answers

- **What is this?** 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 by humboldts secret
- **How much does it cost?** 1489 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/716798130-set-of-a-and-b-liquid-hydroponics-fertilizer-worlds-best)

## 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

- • **Universal Grower’s Ally:** Optimized for hydroponics, soil, coco, and aquaponics—one formula to rule all setups.
- • **Effortless Feeding Routine:** Simple equal parts mix eliminates guesswork—feed your plants consistently and confidently.
- • **Visible Growth, Fast Results:** Supports vibrant leaves and bold blooms—see healthier plants in just one week.
- • **Clean & Clog-Free Performance:** pH-balanced and water-soluble to keep your irrigation lines spotless and your system running smooth.
- • **All-in-One Nutrient Powerhouse:** Balanced formula fuels every growth stage with essential macro and micro nutrients.

## Overview

Humboldts Secret Base A & B is a premium two-part liquid nutrient system delivering a perfectly balanced blend of nitrogen, phosphorus, potassium, calcium, and magnesium. Designed for all growing environments—hydroponics, soil, coco, and aquaponics—this pH-balanced, fully water-soluble formula ensures easy mixing and consistent feeding with a simple 1:1 ratio. Ideal for both vegetative and flowering stages, it promotes strong roots, lush foliage, and vibrant blooms, making it the go-to nutrient system for professional and home growers seeking reliable, fast-acting plant nutrition.

## Description

Humboldts Secret Base A and B is a premium two-part liquid nutrient system created to provide complete plant nutrition from seedling to final bloom. With a balanced blend of nitrogen, phosphorus, potassium, calcium, magnesium, and other essential nutrients, this formula supports healthy root development, leafy growth, and vibrant flowering. Whether you are growing indoors or outdoors, in hydroponic systems, soil, coco coir, or aquaponics, this nutrient system is designed to perform across all growing methods and plant environments with reliable consistency. The pH-balanced, fully water-soluble formula mixes easily without clogging lines or leaving behind residue. The simple 1:1 mix ratio means you use equal parts of Base A and Base B with every watering, ensuring consistent feeding without guesswork or complicated instructions. Humboldts Secret Base A and B is suitable for a wide range of plant types, including leafy greens, herbs, vegetables, flowers, shrubs, and houseplants. Each bottle is formulated with precision to support plants during both the vegetative and flowering phases, providing the core elements needed to maintain overall plant vitality and appearance. Whether you are managing a small home setup or a larger growing operation, this system is a dependable addition to any routine. In hydroponic environments, where nutrient delivery needs to be fast and consistent, Base A and B delivers a focused solution without unnecessary additives. There are no complicated schedules, just straightforward nutrition that works across many environments and plant varieties. With Humboldts Secret, you can improve the quality of your plant care and stay in control of the feeding process. From the first application, Base A and B delivers a balanced nutritional foundation for strong, consistent plant health. It is a smart, efficient choice for anyone looking to support steady plant performance through every stage of growth with reliable results and visible improvements.

Review: 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: I’ve been using these for my “tomato’s” and honestly works great makes your plant grow like crazy if it’s your first time maybe try there stater kit

## Features

- 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 | B01IM88KKI |
| Item model number | 4316245515 |
| Manufacturer | Humboldts Secret |
| Package Dimensions | 21.11 x 20.19 x 13 cm; 907.18 g |

## Product Details

- **Brand:** Humboldts Secret
- **Item form:** Liquid
- **Item weight:** 32 Ounces
- **Liquid volume:** 64 Fluid Ounces
- **Specific uses for product:** Hydroponics

## Images

![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 - Image 1](https://m.media-amazon.com/images/I/71TqEQG6ueL.jpg)

## Questions & Answers

**Q: What is the Nitrogen break down on the label?**
A: NPK of Base A and B is 4-0-1 and 1-4-2, respectively, from Nitrate Nitrogen.

**Q: How do I know how much to use in my tower garden?**
A: We used 400 ml each if tub is full (20 gallon) to start. Then 200 ml once a week and that worked for us. If your plants aren’t producing they may need more nutrients.

**Q: Is this post sold as  2 32 oz containers of base a and base b? or two 16 oz containers of base a and  base b?**
A: It is 2 bottles each contains .946 liters or 32 ozs

**Q: Does this nutrient line work well in soil?**
A: I have been using these along with Golden Tree, SuperThrive, Heavy Boost & an enzyme blend.  I use this combination every other watering.  The alternate watering I use the Fox Farm nutrients.  Last crop was excellent.  This crop may be even better!  Will most likely continue using these 2 nutrient sustems.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Review
*by J***Z on 20 January 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.

### ⭐⭐⭐⭐⭐ Review
*by J***H on 23 December 2025*

I’ve been using these for my “tomato’s” and honestly works great makes your plant grow like crazy if it’s your first time maybe try there stater kit

### ⭐⭐⭐⭐⭐ Review
*by K***R on 15 January 2026*

Great product

## 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 ± 2% Readout Accuracy 3-in-1 TDS EC Temperature Meter for Hydroponics, Pool and Aquarium, Yellow Blue, UL Certified

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*Product available on Desertcart Denmark*
*Store origin: DK*
*Last updated: 2026-02-03*