MILLS BASIS B 20LTR

Two-Part Base Nutrient with Magnesium & Minerals, 20L

Mills Basis B is one half of the Mills two-part base nutrient system, used in equal parts with Mills Basis A across the full growing cycle. It supplies magnesium alongside a broader set of essential minerals and elements, formulated to stay available to the plant across a wide pH range through both the vegetative and bloom stages.

This 20L size of Basis B fits a mid-size grow running several rooms or a longer feeding schedule.

Key Features & Benefits

• Magnesium & Mineral Blend — supplies magnesium along with other essential minerals and elements for the full growing cycle.
• Two-Part Base System — used in equal parts with Mills Basis A rather than as a standalone base feed.
• Wide pH Range Compatibility — formulated to keep nutrients available to the plant across a wide pH range.
• PGR-Free Formula — formulated without plant growth regulators.

Who Should Use Mills Basis B

Growers running the Mills two-part base nutrient system who need Basis B to pair with Basis A across the vegetative and bloom stages.

About Mills Basis B

Mills Nutrients builds its feeding program around five integrated products — Basis A and B, Start-R, C4, and Ultimate PK, plus the silica supplement Vitalize — developed at the company's research and production facility in the Netherlands. Basis A and B form the base of that system, supplying the plant's core nutrition throughout the full growing cycle.

Frequently Asked Questions

How is Mills Basis B used?

It's one half of the Mills two-part base nutrient system, used in equal parts with Mills Basis A to supply the plant's core nutrition. Running Basis A and B together, rather than either alone, is what delivers the full mineral profile the system is built around.

Do I need Basis A as well?

Yes, Basis A and Basis B are designed to be mixed together in equal parts as a two-part base feed. Using Basis B on its own leaves out nutrients that only Basis A supplies.

Does Basis B contain plant growth regulators?

No, it's formulated without plant growth regulators. All of the growth response comes from the mineral and nutrient content of the two-part base feed.

What growing mediums is Basis B suited for?

It's formulated for use across growing mediums and watering methods, from hand-fed containers to recirculating hydroponic systems. The wide pH range compatibility is what keeps nutrient availability consistent across those setups.

Which size should I choose?

The 5L and 20L sizes suit home and mid-size growers, while the 60L and 200L sizes fit larger or commercial operations running Basis A and B through a full growing cycle. Match Basis B's size to whatever Basis A quantity is already on hand, since the two are used in equal parts.