Base A & B Bundle

Base A & B

The Foundation behind the legend. Your complete base nutrient system — for any gardener, any setup.

Balanced, full-spectrum nutrition in two easy-to-use bottles. Designed to power healthier growth across every stage, without nutrient burn or complicated mixing.

  • Complete macronutrient blend
  • Equal-ratio, 2-part system
  • Clean formula, 100% water-soluble, and pH-balanced
  • Works in all grow mediums
$21.99
Base A & B Bundle
  • Base A & B Bundle
  • Base A & B Bundle
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  • label
  • Base A & B Bundle

The base nutrient system for
real-world gardeners.

If you've ever scorched your plants, second-guessed your mix, or battled inconsistent growth, Base A & B is your foundation to steady, full-cycle plant health.

"Big, fragrant blooms with every batch."

🧠 No math, no rotating bottles, no overfeeding.

🔄 Compatible with Humboldts Secret additives and any feeding schedule.

👥 Hundreds of thousands of gardeners rely on this formula every week to keep their plants on track.

📈 Reliable, visible results — no overthinking needed.

🌱 Optimized NPK + secondary nutrients to support steady growth and bloom development.

🧪 Designed to be used together in equal parts — all the way from veg to bloom.

🧠 No math, no rotating bottles, no overfeeding.

🔄 Compatible with Humboldts Secret additives and any feeding schedule.

👥 Hundreds of thousands of gardeners rely on this formula every week to keep their plants on track.

📈 Reliable, visible results — no overthinking needed.

🌱 Optimized NPK + secondary nutrients to support steady growth and bloom development.

🧪 Designed to be used together in equal parts — all the way from veg to bloom.
See How It Works

What’s inside?

Every bottle delivers a full-spectrum macronutrient profile — the alchemy your plants crave:

Nitrogen (N) for lush vegetative growth.
Phosphorus (P) to fuel strong roots and flower development.
Potassium (K) for structure and resilience.
Calcium + Magnesium (Ca + Mg) to support absorption and prevent deficiencies.

You get:

  • Burn-free feeding that keeps plants healthy from start to finish.
  • Better nutrient uptake across any medium.
  • A consistent foundation for all plant types.

Balanced, fully water-soluble, and true to its promise to perform in any grow system.

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How to use Base A & B in 5 simple steps

1

Start with fresh water in your reservoir or can.

2

Add Base A, stir thoroughly.

3

Add Base B, stir thoroughly.

4

Feed 1-3 times weekly, or with every watering.

5

Pair with Golden Tree, Flower Stacker, or your current nutrient line.
The Golden Rule: Never mix A & B together in concentrate. Always dilute into water to prevent lockout.

Better than your current base nutrients.

Struggling with generic fertilizers like MiracleGro? Wrestling with overbuilt 3-part systems? If you’ve
been burned (literally or figuratively), Base A & B is your upgrade.

  • Formulated to power full-cycle plant health, not just bloom or veg
  • Trusted by gardeners switching from Advanced Nutrients and General Hydroponics
  • Clean, strong, and safe for edible, ornamental, and flowering plants
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Visible victories from gardeners like you.

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Customer Feedback

FAQ
Is Base A & B suitable for the entire grow cycle (veg and bloom)?

Yes — Base A & B is formulated to support plant health and nutrition from early vegetative growth all the way through the flowering stage. There’s no need to switch or rotate.
Can I mix Base A and B together before I mix them into water?

NO. Base A and B should never be combined in their concentrated form as nutrient lock out will occur. Always dilute A and B into water.
What’s the correct mixing order for best nutrient absorption?

For the best results, start with ​Golden Tree (if using), then add Base A and mix well, followed by Base B. Stir thoroughly after each step to ensure a well-blended solution.
How much of Base A & B should I use per gallon?

Use 5–14 mL of each part (Base A and Base B) per gallon of water. Choose the right amount based on your plant’s growth stage and size (you can find the information you need in our ​nutrient calculator).
How often should I feed my plants with Base A & B?

You can feed with Base A& B during every watering or up to three times per week. If you’re also using Golden Tree, don’t exceed three total feedings weekly.
Can I pair Base A & B with other Humboldts Secret nutrients like Golden Tree or Flower Stacker?

Base A & B is designed to be the foundation of your feeding regimen. It integrates perfectly with Golden Tree, ​Flower Stacker, and the rest of the Humboldts Secret nutrient line.
Why are Base A & B sold separately and not bundled with other products like Golden Tree?

This way, you can flexibly stock up on exactly what you need. Want a bundle? Our ​Starter Kit includes Base A & B with top-performing additives. 

Over one hundred thousand gardeners trust Humboldts Secret

Secret to keep their plants thriving.

Grab Base A & B to unlock real results. It’s your clean, concentrated,no-guesswork foundation that supports every stage of growth.

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