What is the Nitrogen break down on the label?

NPK of Base A and B is 4-0-1 and 1-4-2, respectively, from Nitrate Nitrogen.

How do I know how much to use in my tower garden?

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.

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?

It is 2 bottles each contains .946 liters or 32 ozs

Does this nutrient line work well in soil?

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.

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Humboldts Secret Base A & B Liquid Hydroponic Fertilizer | Complete Hydroponic Nutrients for Indoor and Outdoor Plants | Supports Healthy Vegetative Growth and Flowering Stage | 32 Ounce Set

Humboldts Secret Base A & B Liquid Hydroponic Fertilizer | Complete Hydroponic Nutrients for Indoor and Outdoor Plants | Supports Healthy Vegetative Growth and Flowering Stage | 32 Ounce Set

Product ID: 33267140

Details

Brand
Humboldts
Item Form
Liquid
Item Weight
4 pounds
Liquid Volume
64 fluid
Specific Uses For Product
Plant Growth

🌿Full-spectrum NPK + Ca & Mg

💧64 fl oz liquid formula

⚖️1:1 precise mixing ratio

13995 kr

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Description

🌱 Unlock your garden’s secret weapon—grow smarter, not harder!

CLEAN CLOG FREE FORMULA - pH-balanced and fully water-soluble for smooth flow in hand or automated watering systems.
EFFORTLESS WEEKLY FEEDING - Simplify your routine with a quick 1:1 mix—no guesswork, just consistent growth.
UNIVERSAL GROWERS ALLY - Perfect for hydroponics, soil, coco coir, and any indoor/outdoor setup.
ALL IN ONE NUTRIENT POWERHOUSE - Complete formula fuels vibrant leaves and bold blooms from veg to flower stages.
TRUSTED BY PROS HOME GARDENERS - Join 3,400+ happy growers seeing visible results in just one week.

Humboldts Secret Base A & B is a 64 fl oz liquid hydroponic fertilizer delivering a balanced, full-spectrum nutrient blend including nitrogen, phosphorus, potassium, calcium, and magnesium. Designed for easy 1:1 mixing, it supports healthy vegetative growth and flowering across all plant types and growing mediums. Its pH-balanced, water-soluble formula ensures no clogging, making it ideal for both automated and manual watering systems. Trusted by thousands, it guarantees professional-grade results with minimal effort.

Specifications

ASIN	B01IM88KKI
Best Sellers Rank	#11,478 in Patio, Lawn & Garden ( See Top 100 in Patio, Lawn & Garden ) #407 in Garden Fertilizers
Brand Name	Humboldts Secret
Coverage	Medium
Customer Reviews	4.5 4.5 out of 5 stars (3,416)
Item Form	Liquid
Item Weight	4 pounds
Liquid Volume	64 fluid ounces
Manufacturer	Humboldts Secret
Mixing Ratio	1:1
Model Number	4316245515
Number of Items	1
Part Number	4316245515
Specific Uses For Product	Plant Growth
Target Species	Plants
UPC	648260730437
Unit Count	64 Fluid Ounces

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13995 kr

Duties & taxes included

In stock

Sold byAmazon IcelandDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Iceland.

Secure transaction

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TrustScore 4.5 | 7,300+ reviews

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