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Collection: Additives & Supplements

Nutrients that are great supplements to a base nutrient but do not contain complete plant nutrition.

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Amendments (3 products)
Athena Nutrients (4 products)
Aurora/Soul Nutrients (1 product)
BioAg Nutrients (2 products)
Biobizz Nutrients (10 products)
Botanicare Nutrients (13 products)
CANNA Nutrients (10 products)
Cutting Edge Nutrients (10 products)
Down to Earth Fertilizers (1 product)
Fish Head Farms (4 products)
FoxFarm Nutrients (14 products)
Front Row Ag Nutrients (3 products)
General Hydroponics (5 products)
Grean Bicycles (1 product)
GREASE Nutrients (7 products)
Green Air Nutrients (2 products)
Grow More Nutrients (1 product)
Heavy16 Nutrients (3 products)
House & Garden Nutrients (11 products)
Media Amendments (2 products)
Microbe Life Nutrients (3 products)
Mills Nutrients (8 products)
New Millenium Nutrients (1 product)
NPK Industries (26 products)
Optic Foliar (12 products)
Plagron Nutrients (2 products)
Plant Care (1 product)
Real Growers (1 product)
SIPCO Nutrients (3 products)
South Cascade Organics (3 products)

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Athena Ag (4 products)
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BioAg (2 products)
Biobizz (10 products)
Botanicare (13 products)
CANNA Continental (10 products)
Cutting Edge Solutions (10 products)
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Ecological Laboratories (3 products)
Fish Head Farms (4 products)
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Fractal Growth (8 products)
Garden of Oz (1 product)
General Hydroponics (5 products)
Grean Bicycles (1 product)
Green Air Products (2 products)
Grow More (1 product)
Heavy16 (3 products)
House & Garden (11 products)
Mills Nutrients (8 products)
New Millenium (1 product)
NPK Industries (26 products)
Optic Foliar (13 products)
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Real Growers (1 product)
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SIPCO (3 products)
Solstice Ag (3 products)
South Cascade Organics (3 products)

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CANNA Nutrients (10 products)
Cutting Edge Nutrients (10 products)
Down to Earth Fertilizers (1 products)
Fish Head Farms (4 products)
FoxFarm Nutrients (14 products)
Front Row Ag Nutrients (3 products)
General Hydroponics (5 products)
Grean Bicycles (1 products)
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Heavy16 Nutrients (3 products)
House & Garden Nutrients (11 products)
Media Amendments (2 products)
Microbe Life Nutrients (3 products)
Mills Nutrients (8 products)
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NPK Industries (26 products)
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Athena Ag (4 products)
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Biobizz (10 products)
Botanicare (13 products)
CANNA Continental (10 products)
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Down to Earth (3 products)
Ecological Laboratories (3 products)
Fish Head Farms (4 products)
Foxfarm (14 products)
Fractal Growth (8 products)
Garden of Oz (1 products)
General Hydroponics (5 products)
Grean Bicycles (1 products)
Green Air Products (2 products)
Grow More (1 products)
Heavy16 (3 products)
House & Garden (11 products)
Mills Nutrients (8 products)
New Millenium (1 products)
NPK Industries (26 products)
Optic Foliar (13 products)
Plagron (2 products)
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Rocky Mountain Soil Stewardship (1 products)
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167 products

Cannazym 1 Litre

Sold out

Cannazym 1 Litre

Vendor:
CANNA Continental

Regular price $33.13

Regular price ~~$35.53~~ Sale price $33.13

Sold out
Grean Bicycles Happy Endings Tea Mix - 2lb

Sold out

Grean Bicycles Happy Endings Tea Mix - 2lb

Vendor:
Grean Bicycles

Regular price $19.97

Regular price ~~$20.99~~ Sale price $19.97

Sold out
KoolBloom 2.2 lbs

Sold out

KoolBloom 2.2 lbs

Vendor:
General Hydroponics

Regular price $38.88

Regular price ~~$41.59~~ Sale price $38.88

Sold out
BioAg Ful-Power gal

Sold out

BioAg Ful-Power gal

Vendor:
BioAg

Regular price $66.32

Regular price ~~$52.99~~ Sale price $66.32

Sold out
Beastie Bloomz 6 oz

Sale

Beastie Bloomz 6 oz

Vendor:
Foxfarm

Regular price $23.64

Regular price ~~$23.99~~ Sale price $23.64

Sale
Photosynthesis Plus 16oz

Sale

Photosynthesis Plus 16oz

Vendor:
Ecological Laboratories

Regular price $22.35

Regular price ~~$23.49~~ Sale price $22.35

Sale
Canna Rhizotonic 1 L

Sold out

Canna Rhizotonic 1 L

Vendor:
CANNA Continental

Regular price $68.57

Regular price ~~$73.55~~ Sale price $68.57

Sold out
Athena Balance 1 gallon

Sale

Athena Balance 1 gallon

Vendor:
Athena Ag

Regular price $34.62

Regular price ~~$45.00~~ Sale price $34.62

Sale
CaliMagic Gal

Sold out

CaliMagic Gal

Vendor:
General Hydroponics

Regular price $59.93

Regular price ~~$62.93~~ Sale price $59.93

Sold out
Uncle John's Blend Quart

Sold out

Uncle John's Blend Quart

Vendor:
Cutting Edge Solutions

Regular price $34.98

Regular price ~~$34.99~~ Sale price $34.98

Sold out
Alfa GREASE - Alfalfa Tea Extract for Yield Increase

Sold out

Alfa GREASE - Alfalfa Tea Extract for Yield Increase

Vendor:
Fractal Growth

Regular price From $32.97

Regular price ~~$41.00~~ Sale price From $32.97

Sold out
Cutting Edge Solutions Bulletproof Si Silicon Supplement 1 qt

Cutting Edge Solutions Bulletproof Si Silicon Supplement 1 qt

Vendor:
Cutting Edge Solutions

Regular price $25.99

Regular price ~~$25.99~~ Sale price $25.99
Down to Earth Solution Grade Gypsum 1 lb

Down to Earth Solution Grade Gypsum 1 lb

Vendor:
Down to Earth

Regular price $6.99

Regular price ~~$6.99~~ Sale price $6.99
RAW B-Vitamin 2 oz

Sale

RAW B-Vitamin 2 oz

Vendor:
NPK Industries

Regular price $16.68

Regular price ~~$16.85~~ Sale price $16.68

Sale
Cutting Edge Solutions Amplified Cal-Mag gal

Sold out

Cutting Edge Solutions Amplified Cal-Mag gal

Vendor:
Cutting Edge Solutions

Regular price $59.39

Regular price ~~$61.99~~ Sale price $59.39

Sold out
Mineral Matrix Organic Micronutrients qt

Sale

Mineral Matrix Organic Micronutrients qt

Vendor:
Green Air Products

Regular price $18.96

Regular price ~~$19.95~~ Sale price $18.96

Sale
Mineral Matrix Organic Micronutrients gal

Sold out

Mineral Matrix Organic Micronutrients gal

Vendor:
Green Air Products

Regular price $47.40

Regular price ~~$49.95~~ Sale price $47.40

Sold out
Hygrozyme Horticultural Enzymatic Formula 4 Liter

Sold out

Hygrozyme Horticultural Enzymatic Formula 4 Liter

Vendor:
SIPCO

Regular price $139.71

Regular price ~~$146.95~~ Sale price $139.71

Sold out
RAW Silica 2 oz

Sold out

RAW Silica 2 oz

Vendor:
NPK Industries

Regular price $14.85

Regular price ~~$15.00~~ Sale price $14.85

Sold out
Mills C4 1L

Sold out

Mills C4 1L

Vendor:
Mills Nutrients

Regular price $73.33

Regular price ~~$80.00~~ Sale price $73.33

Sold out

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CO2 Swaps - $12.49 + Tax

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