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General Hydroponics

Helping the world grow! Located in Sebastopol, California General Hydroponics nutrients, systems and gardening products lead the industry in innovation and superior results. Achieve your own outstanding success with GH premium plant foods, media and equipment. There’s nothing better anywhere!

Visit the company’s Feeding Schedule (PDF) here.

  • General Hydroponics Performance Pack

    Performance Pack

    Contains everything you need for the best crop quality and enhanced plant yields.

    $49.95 $44.95
  • CALiMAGic


    A concentrated blend of readily available calcium (Ca) and magnesium (Mg).

    $16.50 $12.50
  • RapidStart Rooting Enhancer

    RapidStart (1-0.5-1)

    Concentrated plant extracts stimulate explosive root development and branching.

    $26.50 $20.95
  • AeroFlo Aeroponic System

    AeroFlo 60

    Available with a 40-gallon reservoir and SIX 6 ft. growing chambers – 10 sites each.

    $1,173.50 $949.95
  • AeroFlo Aeroponic System

    AeroFlo 36

    Available with a 40-gallon reservoir and SIX 4 ft. growing chambers – 6 sites each.

    $937.95 $759.95
  • AeroFlo Aeroponic System

    AeroFlo 30

    A compact setup that’s perfect for growing greens, vegetables, berries and flowers.

    $559.95 $514.95
  • AeroFlo Aeroponic System

    AeroFlo 20

    Delivers a super-oxygenated, nutrient-rich mist to your plant’s roots.

    $421.95 $344.95
  • AeroFlo Aeroponic System

    AeroFlo 18

    Looking for an aeroponic garden with a proven track record? Well, here it is!

    $429.00 $389.95
  • Rubber Grommets


    Rubber grommets snap into place and form a water-tight seal in pre-drilled holes.

    $12.95 $10.50
  • Rapid Rooter Plugs

    Rapid Rooter Plugs

    Enriched with micronutrients and beneficial bacteria for superior results.

    $17.50 $14.50
  • FloraBlend Vegan Compost Tea


    Made from a select blend of plant materials plus seaweed and rock powders.

    $11.95 $9.50
  • Rapid Rooter Mat

    Rapid Rooter Mat

    Each pack contains 98 cross-cut planting sites derived from composted tree bark.

    $23.95 $18.95
  • AzaMax (Azadirachtin)

    AzaMax (Azadirachtin)

    Works as well as synthetic formulas, but without the environmental impact.

    $29.50 $22.95
  • Azamax Ready To Spray

    Azamax Spray

    Easy to use, just drop one pre-dosed vial into the bottle, add water, shake and apply.

    $13.50 $14.95
  • General Hydroponics pH-Down

    pH Down (Acid)

    Use sparingly — just a little at a time is all you need to achieve proper levels.

    $11.95 $8.95
  • General Hydroponics pH-Up

    pH Up (Base)

    Add a little at a time to adjust between 5.5 and 6.5 for most indoor crops.

    $11.95 $8.95
  • pH 4.01 Calibration Solution

    pH 4 Buffer

    Easy to use and works with all the popular brands in the hydroponics market.

    $7.95 $5.95
  • pH 7.0 Calibration Solution

    pH 7 Buffer

    Made with the highest quality ingredients so you can work with peace of mind.

    $7.95 $5.95
  • pH Test Indicator

    Test Kit

    Easy to use, accurate and inexpensive! Just a few drops is all it takes for fast results.

    $7.50 $5.95
  • TDS Calibration Solution

    1500 ppm NaCl

    Easy to use, just dip your electrode into a small amount of the liquid and adjust.

    $21.50 $16.95
  • Diamond Nectar

    Diamond Nectar

    A premium product used to improve the uptake and utilization of trace minerals.

    $17.50 $13.50
  • Flora Bloom Hydroponic Nutrient

    Flora Bloom

    Provides nutrients that are essential for a complete hydroponic plant diet.

    $12.50 $9.95
  • FloraDuo (Part A & B)

    FloraDuo (A & B)

    Use to meet the demands of all plants through every phase — seedling to harvest!

    $14.95 $9.95
  • Flora Grow Hydroponic Nutrient

    Flora Grow

    The most widely used hydroponic nutrient in the world because it is the best!

    $12.50 $9.95
  • Floralicious Bloom

    Floralicious Bloom

    Use to promote maximum flower size and fruit swelling for heavy yields.

    $26.95 $20.95
  • Floralicious Grow

    Floralicious Grow

    Builds the leaf and root masses needed for healthy growth and superior harvests.

    $26.95 $20.95
  • Floralicious Plus

    Floralicious Plus

    Use with your fertilizer program to promote incredible flavor and enormous yields.

    $21.95 $16.95
  • Flora Micro Hardwater

    Flora Micro Hardwater

    Required if your tap water is over 200 ppm, or contains calcium above 70 ppm.

    $15.95 $12.50
  • Flora Micro Hydroponic Nutrient

    Flora Micro

    This formula is known throughout the world as the industry standard.

    $15.95 $12.50
  • FloraNectar Sweetener


    Made with a powerful blend of plant minerals, natural sugars and flavor enhancers.

    $20.95 $16.50
  • FloraNova Bloom

    FloraNova Bloom

    Use to stimulate exceptional budding and blooming in flowering plants.

    $27.50 $21.50
  • FloraNova Grow

    FloraNova Grow

    Gives indoor gardeners the strength of a dry concentrate and the ease of a liquid.

    $27.50 $21.50
  • FloraShield Rinse

    Flora Shield

    Use to rinse systems and plants during ALL phases of the life cycle.

    $28.95 $22.50
  • Kool Bloom


    Packed with the potency your plants prefer in the final stages of flowering.

    $15.50 $11.95
  • Liquid Kool Bloom

    Liquid KoolBloom

    Promotes abundant flowering and helps facilitate ripening in annual flowers and herbs.

    $21.95 $16.95
  • Pineapple Rush

    Pineapple Rush

    Made with quality organic sugars, including molasses and raw cane sugar.

    $20.95 $16.50
  • Dual Diaphragm Air Pump

    Dual Diaphragm

    Includes four fully adjustable output valves, allowing the perfect volume of airflow.

    $101.00 $79.95
  • EcoGrower Hydroponic System 1

    EcoGrower Max

    The EcoGrower Max uses an air driven “spider” drip design with 6-inch net pots.

    $233.95 $189.95
  • EuroGrower Drip System


    A simple and compact setup that’s the perfect garden for a one light operation.

    $616.50 $499.95
  • FloraKleen Clearing Solution


    Removes fertilizer residues that can accumulate over time in systems and media.

    $9.95 $7.50
  • MegaFarm Drip System


    Includes a heavy-duty 20-gallon grow chamber that sits on top of a large reservoir.

    $386.95 $314.95
  • TNC Water Pump

    TNC (1/4 HP)

    Reliably moves 1268 gallons per hour through 1-inch pipe thread fittings.

    $231.95 $179.95
  • WaterFarm 8-Pack Hydroponic System

    WaterFarm, 8-Pack

    Includes EIGHT WaterFarm modules all connected together to one controller.

    $514.95 $449.95
  • WaterFarm Complete


    One of our best hydroponic systems for growing large plants in a small space.

    $65.95 $59.95
  • Waterpower Submersible Pump


    Fully submersible, magnetic drive and NO replacement seals — it’s one of the best!

    $131.95 $99.95
  • Rapid Rooter Tray

    Rapid Rooter

    The optimal air-to-water ratio within the plug matrix causes explosive root growth.

    $23.95 $18.95
  • SubCulture-B Bacterial Root Inoculant


    This blend of beneficial microbes will improve the vitality and yield in all plants.

    $36.95 $33.50
  • SubCulture-M Mycorrhizal Root Inoculant


    Use from germination or propagation all the way through harvest.

    $21.00 $17.95
  • CocoTek Mats (10-Pack)

    CocoTek Mats

    Provides support for plant roots that grow through and under the media.