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Brew & Grow Hydroponics Gardening and Homebrewing Supplies of Chicagoland
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Nutrient Additives and Plant Stimulators

Home / Hydroponic & Organic Gardening / Fertilizer and Plant Food / Nutrient Additives and Plant Stimulators
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Max: $300
  • Hydroponic & Organic Gardening
    • Grow Lights, Reflectors, Ballasts and Tents
    • Hydroponic Systems, Equipment and Testing
    • Plant Propagation and Seed Starting
    • Fertilizer and Plant Food
      • Hydroponic Nutrients
      • Organic Plant Nutrients
      • Nutrient Additives and Plant Stimulators
    • Growing Media and Soil
    • Container Gardening
    • Environment Control for Indoor Gardening
    • Pest and Disease Control
    • Seeds
    • Miscellaneous and Gardening Acessories
  • Homebrewing
Flex FLEX Liquid H2O2 (34% Hydrogen Peroxide)  - 1 Gal
Hydrogen Peroxide (H2O2 34%) is an excellent product for cleaning hydroponic equipment, materials and grow areas. 
FLEX Liquid H2O2 (34% Hydrogen Peroxide) - 1 Gal
$21.99
PRO-MIX PRO-MIX Organic Seed Starting Mix with MYCOACTIVE - 16qt
Formulated with quality approved-organic ingredients. Contains an organic fertilizer that gradually feeds plants. Provides easy plant-care for improved seedling performance. Ideal for germinating vegetables, flowers, herb seeds, as well as starting stems
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PRO-MIX Organic Seed Starting Mix with MYCOACTIVE - 16qt
$13.99
Real Growers Real Growers Recharge Single Stick Pack
Stronger, healthier plants and roots, in 48 hours or less. Works great in traditional soil and soilless media. All the benefits of compost tea, with none of the mess.
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Real Growers Recharge Single Stick Pack
$2.95
Cultured Biologix Cultured Biologix EZ Tea Veg - 8oz
EZ Tea Veg is an instant microbial tea that contains all the aspects of a compost tea, but without the mess, hassle, or smell of brewing compost tea. This vegetative-specific formulation contains.
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Cultured Biologix EZ Tea Veg - 8oz
$18.00
Plant Success Plant Success Great White Mycorrhizae 8 oz
The endo and ecto mycorrhiza, beneficial bacteria and trichoderma build a microbial system in and on plant roots which enhance water and nutrient uptake. Great White can be used in hydroponics, field agriculture or home gardening. It is best used as a see
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Plant Success Great White Mycorrhizae 8 oz
$71.99
Plant Success Plant Success Great White Mycorrhizae 4 oz
The endo and ecto mycorrhiza, beneficial bacteria and trichoderma build a microbial system in and on plant roots which enhance water and nutrient uptake. Great White can be used in hydroponics, field agriculture or home gardening. It is best used as a see
Add to cart
Plant Success Great White Mycorrhizae 4 oz
$39.99
Rhizoflora Terpinator 1 Liter
Terpinator is formulated to increase the concentration of terpenoids in aromatic plant oils and glands. The unique composition of Terpinator provides the basic building blocks plants required to produce flavorful oils. By using naturally occurring plant a
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Terpinator 1 Liter
$24.74
Real Growers Real Growers Grow Dots 75gram
Programmed release over the first 6 weeks of your grow cycle. High Nitrogen, for strong, vegetative growth. Phosphorus and Potassium, for stronger, healthier plant roots.
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Real Growers Grow Dots 75gram
$7.96
Canna Canna CalMag Agent 1L
CANNA CALMAG AGENT is a calcium and magnesium mineral nutrient designed to improve water quality for calcium sensitive systems, such as when using reverse osmosis water with a coco medium. Our CANNA CALMAG AGENT increases water hardness, without disruptin
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Canna CalMag Agent 1L
$19.01
Nectar For The Gods Nectar For The Gods One Shot 4 lb
One Shot is a soil amendment for super soil style gardening. One Shot is a blend of natural ingredients that are ground into fine powders and held together with a molasses binder in small pellets. The molasses activates and encourages microbial activity i
Nectar For The Gods One Shot 4 lb
$24.99
General Hydroponics GH pH Control Kit
General Hydroponics pH Control Kit contains 8 oz pH UP, 8 oz pH DOWN, 1 oz indicator and vial.
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GH pH Control Kit
$22.98
Down To Earth Down To Earth Bat Guano (7-3-1) - 2 lb
The undisputed champion of organic fertilizers, Bat Guano is rich in readily available Nitrogen, Phosphorus and micronutrients and provides essential plant nutrition for vigorous vegetative growth and early fruit and flower development. Bat Guano is fast
Down To Earth Bat Guano (7-3-1) - 2 lb
$23.94
Real Growers Real Growers Recharge 8oz Bag
Stronger, healthier plants and roots, in 48 hours or less. Works great in traditional soil and soilless media. All the benefits of compost tea, with none of the mess.
Add to cart
Real Growers Recharge 8oz Bag
$34.99
Fish Head Farms Fish Sh!t Organic Soil Conditioner - 5 Liter
By introducing a wide variety of beneficial bacteria and microorganisms in to the rhizosphere, Fish Sh!t creates an optimal symbiotic relationship between plant and soil.
Fish Sh!t Organic Soil Conditioner - 5 Liter
$299.00
Plant Success Plant Success King Crab - 4 oz
Increase yields, maximize phosphorous solubility, and add life to the root zone! The active microbes in King Crab were specifically selected to increase the availability of nutrients during the vegetative stage and increase yields in the flowering stage.
Plant Success King Crab - 4 oz
$27.99
Rhizoflora Purpinator 1 Liter
Purpinator is a specialty nutrient additive formulated to deliver increased flavonoid, terpenoid, and resin production in your plants. In addition to these benefits, Purpinator will improve the coloration of plants with purple phenotypes. Much like its pr
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Purpinator 1 Liter
$28.48
Sale
Fish Head Farms Fish Sh!t Organic Soil Conditioner - 1 Liter
By introducing a wide variety of beneficial bacteria and microorganisms in to the rhizosphere, Fish Sh!t creates an optimal symbiotic relationship between plant and soil.
Add to cart
Fish Sh!t Organic Soil Conditioner - 1 Liter
$130.00
$101.25
Power Si - 250 ml
The original, patented form of stabilized, bioavailable silica for plants.  Often imitated never duplicated.  Unlike other silica products, we work with the best possible silica matrix (patented) to enable superior absorption.  Power Si is a proprietary m
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Power Si - 250 ml
$75.00
Neptunes Harvest Neptune's Harvest Seaweed Plant Food Gallon
Neptune’s Harvest Seaweed Plant Food is made from Ascophyllum Nodosum that grows along the cold North Atlantic ocean floor. Recommended for use as an addition to a regular program of Neptune’s Harvest Fish Fertilizer. Use this plant food on all your plant
Neptune's Harvest Seaweed Plant Food Gallon
$39.99
Nectar For The Gods Nectar For The Gods Hades pH Down - Qt
This blend of organic acids lowers your nutrient solution's pH. It's our pH down. Don't worry if you over shoot the down: just add some Olympus Up and see the benefits of adding more calcium.
Nectar For The Gods Hades pH Down - Qt
$21.99
Plant Success Plant Success Great White Mycorrhizae 1 oz
The endo and ecto mycorrhiza, beneficial bacteria and trichoderma build a microbial system in and on plant roots which enhance water and nutrient uptake. Great White can be used in hydroponics, field agriculture or home gardening. It is best used as a see
Add to cart
Plant Success Great White Mycorrhizae 1 oz
$13.99
Down To Earth Down to Earth Neem Seed Meal 5lb
Neem Seed Meal is produced during the extraction of oil from the seed of the Indian Neem tree (Azadiracta indica). It is an excellent way to strengthen root systems, improve plant immunity and balance nutrient levels in the soil. Neem Seed Meal can be mix
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Down to Earth Neem Seed Meal 5lb
$25.22
Gaia Green Gaia Green Super Fly Insect Frass 3-1-2 - 1kg
Super Fly Insect Frass is a fertilizer derived from the excreta of black soldier fly larvae. It is a renewable resource produced from pre-consumer food waste fed to fly larvae. Rich in essential nutrients.
Gaia Green Super Fly Insect Frass 3-1-2 - 1kg
$15.49
Athena Athena Stack - 32 Ounce
Stack is a natural plant nutrient made from kelp extract. The nutrients in Stack encourage healthy growth and flowering. Stack gives the plant tools to reach its full genetic potential.
Add to cart
Athena Stack - 32 Ounce
$100.00
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Chicagoland's premier hydroponic and homebrewing supply store. Largest selection of grow lights, tents, soils, fertilizers, nutrients, grains, hops and yeast. Drop by one of our three convenient locations: Chicago, Roselle, Bolingbrook
(800) 444-2837
[email protected]

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