Humboldts Secret Base A & B 640 Ounce Hydroponic Nutrients - Complete

In this review of the 640 ounce set, the conclusion is straightforward: this large-capacity two-part fertilizer is for growers who want a simple, dependable weekly feed for hydroponic or soil-grown plants. The reviewer found that the Base A and B pair delivers a full spectrum of core elements and dissolves cleanly, making it suited for timers, tanks, and hand watering. If consistent, easy mixing and visible plant vigor are your priorities, this 640 oz set is worth consideration.

Key Features

• Complete nutrition: Supplies nitrogen, phosphorus, potassium, calcium, and magnesium so plants receive balanced macronutrients for steady development.
• Two-part simplicity: The A and B system requires equal parts mixed at each watering, eliminating complicated schedules and reducing mixing errors.
• Fast dissolving: pH-balanced, fully water-soluble formula mixes cleanly and is unlikely to clog lines in automated systems.
• Versatile use: Works across hydroponics, coco coir, pots, raised beds and traditional soil for one consistent feeding approach.
• Large capacity: The 640 oz set gives extended supply for regular weekly feedings, reducing refill frequency for larger gardens or longer seasons.

Who It's For

This 640 ounce Base A and B set is best for home growers and small commercial cultivators who run recurring feed cycles and need a bulk supply that lasts. It suits people using deep water culture, aquaponics, or automated irrigation where a water-soluble, non-residue fertilizer is helpful.

Growers who want tailored stage-specific breeder mixes or tiny container gardeners with only a few plants might prefer smaller bottles or specialized bloom boosters; this product is aimed at steady, general-purpose feeding rather than stage-only micro-formulations.

Pros & Cons

Pros

• Provides a broad set of core nutrients that promote vigorous vegetative growth and healthy flowering.
• Easy two-part mixing method reduces guesswork and saves time during routine feedings.
• Water-soluble, pH-balanced formula mixes quickly and is suitable for both manual and automated systems.

Cons

• Some users report variable plant outcomes, so occasional trial adjustments may be needed for specific strains or systems.
• Large 640 oz size may be more than a small hobbyist needs and requires storage space.

Specifications

Product type	Two-part liquid nutrient set (Base A & B)
Volume	640 oz set
Primary nutrients	Nitrogen, Phosphorus, Potassium
Secondary nutrients	Calcium, Magnesium
Compatibility	Hydroponics, coco coir, soil, pots, raised beds, aquaponics
Formulation	pH-balanced, fully water-soluble liquid

Our Verdict

The 640 oz Base A and B set is a practical choice for growers seeking a straightforward, all-purpose nutrient program that covers both vegetative growth and flowering. Its easy mixing, broad compatibility, and large volume deliver solid value for gardens that need regular weekly feeding, though small-scale users may prefer smaller sizes or targeted supplements.

Frequently Asked Questions

How do I mix the two parts?
Mix equal parts of Base A and Base B with each watering; the formula is designed for simple one-to-one mixing.

Will this clog drip lines or emitters?
The product is pH-balanced and fully water-soluble, formulated to mix cleanly and reduce the chance of residue or clogged lines.

Is it suitable for soil and hydroponics?
Yes, the nutrients are compatible with hydroponic systems, coco coir, pots, raised beds and traditional soil applications.