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Maxi Series

Family Overview – Maxi Series
The Maxi Series is a two-part, dry, water-soluble base nutrient line built around potent, stand-alone formulas: MaxiGro for vegetative growth and MaxiBloom for flowering and fruiting. Both are single-part, milled dry concentrates that mix cleanly into solution, are easy to use in day tanks of any size, and are versatile enough for both hydroponic and soil-based environments. With appropriate levels of primary and secondary nutrients, MaxiGro and MaxiBloom are concentrated enough for commercial scale, yet still come with a mess-free scoop for smaller growers.

How the Maxi Series Program Works

  • MaxiGro is used from seedling/cutting through the vegetative growth stage.

  • MaxiBloom is used when plants move into flowering and fruiting.

  • Each product is a stand-alone, single-part formula; you run one at a time based on growth stage.

 

General Hydroponics MaxiGro plant food packaging on a white background
MaxiGro™10-5-14 $21.51 USD
MaxiBloom™5-15-14 $21.51 USD

Maxi Series is General Hydroponics’ dry nutrient system built for growers who want strong performance with a simpler feeding approach. Featuring MaxiGro and MaxiBloom, this line delivers concentrated, water-soluble nutrition in an easy-to-store dry format that works well for both hydroponic and soil-based growing styles.


Maxi Series is a great fit for growers who want a more straightforward base nutrient strategy without moving into a large multi-bottle program. Its powder format makes it especially appealing for growers who value storage efficiency, portability, and easy measurement. For gardens that need dependable results with a simpler nutrient lineup, Maxi Series offers a practical and effective solution.

Maxi Series is General Hydroponics’ dry nutrient system built for growers who want strong performance with a simpler feeding approach. Featuring MaxiGro and MaxiBloom, this line delivers concentrated, water-soluble nutrition in an easy-to-store dry format that works well for both hydroponic and soil-based growing styles.


Maxi Series is a great fit for growers who want a more straightforward base nutrient strategy without moving into a large multi-bottle program. Its powder format makes it especially appealing for growers who value storage efficiency, portability, and easy measurement. For gardens that need dependable results with a simpler nutrient lineup, Maxi Series offers a practical and effective solution.

Feed programs

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Feed Program

Maxi Series Professional Outdoor 1-Part Nutrient System

A simple dry-nutrient program using MaxiGro for vegetative growth and MaxiBloom for flowering in outdoor and soil-based production. Light, medium, and aggressive schedules provide a straightforward way to scale feeding intensity.
Hand-mix Standard 500 3 schedules
Soil
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Feed Program

Maxi Series Professional Indoor 2-Part Nutrient System

An expanded Maxi Series indoor program using MaxiGro and MaxiBloom with CALiMAGic for additional calcium and magnesium support. Light, medium, and aggressive schedules keep the program simple while allowing growers to adjust feeding intensity.
Hand-mix Standard 500 3 schedules
Hydroponics Coco Coir Soilless Media
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Collection guide

Grower guidance

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Getting Started

Maxi Series Basic Program Flow (Entry-Level)

  • Seedlings and cuttings: Start with MaxiGro at light label rates.
  • Vegetative growth: Continue MaxiGro at veg rates as plants size up.
  • Transition to bloom: When plants begin flowering or fruiting, transition from MaxiGro to MaxiBloom.
  • Full bloom Run MaxiBloom through the flowering/fruiting stage according to label or feed chart guidance.

Collection Resources

Feedchart

Maxi Series Outdoor 1-Part Nutrient System Feedchart

MaxiGro™ & MaxiBloom™ MaxiGro™ and MaxiBloom™ are potent, stand-alone water-soluble, dry concentrate nutrients. MaxiGro™ encourages growth of seedlings, cuttings and stimulates rapid growth through the vegetative growth stage. MaxiBloom™ encourages prolific flowering and fruiting.
English United States Revised 08/24/2026
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