---
product_id: 47409987
title: "Humboldts Secret Starter Kit Pack | Indoor and Outdoor Plant Fertilizer and Hydroponic Nutrients | Base A & B, CalMag and Iron, Golden Tree, Flower Stacker, Plant Enzymes | Complete Garden System"
brand: "humboldts secret"
price: "€ 214.52"
currency: EUR
in_stock: true
url: https://www.desertcart.fr/products/47409987-humboldts-secret-starter-kit-pack-indoor-and-outdoor-plant-fertilizer
store_origin: FR
region: France
---

# Feeds up to 150 gallons nutrient solution 152 fl oz liquid volume Balanced NPK + CalMag + Iron formula Humboldts Secret Starter Kit Pack | Indoor and Outdoor Plant Fertilizer and Hydroponic Nutrients | Base A & B, CalMag and Iron, Golden Tree, Flower Stacker, Plant Enzymes | Complete Garden System

**Brand:** humboldts secret
**Price:** € 214.52
**Availability:** ✅ In Stock

## Summary

> 🌿 Unlock your garden’s secret weapon for lush, unstoppable growth!

## Quick Answers

- **What is this?** Humboldts Secret Starter Kit Pack | Indoor and Outdoor Plant Fertilizer and Hydroponic Nutrients | Base A & B, CalMag and Iron, Golden Tree, Flower Stacker, Plant Enzymes | Complete Garden System by humboldts secret
- **How much does it cost?** € 214.52 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.fr](https://www.desertcart.fr/products/47409987-humboldts-secret-starter-kit-pack-indoor-and-outdoor-plant-fertilizer)

## 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

- • **Bulk Mix Efficiency:** Concentrated formulas stretch to 125-150 gallons, maximizing your garden’s potential.
- • **All-in-One Growth Powerhouse:** Six essential nutrients from seedling to harvest for unstoppable plant vitality.
- • **Consistent Full-Cycle Support:** Reliable nutrition through vegetative and flowering stages for steady, robust growth.
- • **Effortless Indoor & Outdoor Use:** Simplify your routine with easy-to-mix liquids that deliver vibrant, healthy plants.
- • **Versatile Hydro & Soil Friendly:** Perfectly formulated for hydroponics, potting soil, or coco coir—grow anywhere, anytime.

## Overview

The Humboldts Secret Starter Kit Pack is a comprehensive liquid nutrient system containing Base A & B, CalMag & Iron, Golden Tree, Flower Stacker, and Plant Enzymes. Designed for both indoor and outdoor use, it supports all growth phases with balanced macro and micronutrients, suitable for hydroponics, soil, and coco coir. This 152 fl oz kit mixes easily to feed up to 150 gallons of nutrient solution, delivering consistent, measurable results for professional and hobbyist growers alike.

## Description

Humboldts Secret Starter Kit Pack | Indoor and Outdoor Plant Fertilizer and Hydroponic Nutrients | Base A & B, CalMag and Iron, Golden Tree, Flower Stacker, Plant Enzymes | Complete Garden System

## Features

- Complete Nutrition From Seedling To Harvest: The Humboldts Secret starter kit includes six essential products to support plant health from start to finish: Base A & B (quart set), Flower Stacker (quart), CalMag & Iron (quart), Golden Tree (16 ounce), and Plant Enzymes (8 ounce). Whether you're just starting or refining your routine, this complete system helps streamline feeding and encourage vigorous, full-cycle plant development with ease.
- Balanced Feeding For Strong, Steady Growth: This concentrated liquid plant food mixes into 125 to 150 gallons of nutrient-rich solution for dependable plant care. Each formula delivers nitrogen, phosphorus, potassium, calcium, and magnesium to strengthen roots, support structure, and promote faster, more stable growth. Use across the full plant life cycle for consistent nutrition, noticeable results, and long-term health.
- Made For Any Grow Medium Or Setup: Designed for versatility, these hydroponic nutrients work across hydro systems, potting soil, and coco coir. The blends mix easily, apply cleanly, and perform reliably in any environment. Whether you're growing indoors or outdoors, in small containers or larger beds, this kit gives you control, flexibility, and measurable outcomes without complication.
- Effortless Feeding For Indoor Plant Success: Feed houseplants, herbs, leafy greens, and flowers with this simple and effective indoor plant food liquid. It supports root health, vibrant color, and leaf strength with minimal effort required. Ideal for use in grow tents, shelf gardens, or windowsill pots, this formula helps maintain steady indoor plant growth while saving time and simplifying daily care.
- Reliable Support Through Every Growth Phase: This plant fertilizer liquid fits seamlessly into your daily grow routine and supports plants during both vegetative and flowering stages. Whether you're tending a few potted plants or managing a larger setup, it delivers consistent nutrition from week to week and helps maintain long-term plant strength, balance, and development without added complexity.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Liquid Volume | 152 Fluid Ounces |
| Item Weight | 16 Ounces |
| Mixing Ratio | 1:1 |
| Specific Uses For Product | Hydroponics,Potting |
| Target Species | Plants |
| Coverage | Covers a larger area or more plants with bulk purchases |
| Item Form | Liquid |

## Product Details

- **Brand:** Humboldts Secret
- **Item Weight:** 16 Ounces
- **Item Form:** Liquid
- **Liquid Volume:** 152 Fluid Ounces
- **Specific Uses For Product:** Hydroponics,Potting

## Images

![Humboldts Secret Starter Kit Pack | Indoor and Outdoor Plant Fertilizer and Hydroponic Nutrients | Base A & B, CalMag and Iron, Golden Tree, Flower Stacker, Plant Enzymes | Complete Garden System - Image 1](https://m.media-amazon.com/images/I/71Txpg8QvwL.jpg)

## Available Options

This product comes in different **Size** options.

## Questions & Answers

**Q: Why is it not for sale in california ? 😭**
A: Because California claims everything causes cancer

**Q: Is it organic?**
A: No

**Q: Is this a petro chemical salt based solution**
A: No

**Q: Do you think that they’re adding the wrong amount of nutrients that’s why it’s killing some plants?**
A: depends on what medium you are using. Most people don't use washed coco. or use pre-amended soil and have no idea how much nutrients are already in it. or aren't watering enough or don't have ideal humidity so the plant drinks more and gets burned. if there isn't enough water it will become more concentrated. there are 100 reasons why growers make mistakes. Almost every single nutrient line could be amazing if used properly and at the right doses for what the plant genetics ask for. Most of the time it's grower's error. Better to go lighter on nutrients then too heavy. Plants will hurt less and bounce back faster with a deletion rather than abundance of nutrients.

## Frequently Bought Together

- Humboldts Secret Starter Kit Pack – World's Best Indoor & Outdoor Plant Fertilizer and Nutrient System: Base A & B – Golden Tree – Flower Stacker – Plant Enzymes – CalMag & Iron
- Humboldts Secret Sweet & Sticky – Carbohydrate and Saccharide Energy Source – Enhance Aroma and Flavor of Plants – Potting Soil for Indoor Plants – Energy for Plants – 32 Ounces
- Humboldts Secret Tree Trunk - Silicate Additive - Advanced Nutrients - Helps Plants Flourish - Indoor Plant Food - Hydroponic Nutrients - Liquid Fertilizer (32 Ounce)

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*Product available on Desertcart France*
*Store origin: FR*
*Last updated: 2026-01-23*