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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)
Aurora Innovations (1 product)
BioAg (2 products)
Biobizz (10 products)
Botanicare (13 products)
CANNA Continental (10 products)
Cutting Edge Solutions (10 products)
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 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)
Plagron (2 products)
Real Growers (1 product)
Rocky Mountain Soil Stewardship (1 product)
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)
GREASE Nutrients (7 products)
Green Air Nutrients (2 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)
New Millenium Nutrients (1 products)
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)
Real Growers (1 products)
Rocky Mountain Soil Stewardship (1 products)
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167 products

Athena PK 1 gallon

Sale

Athena PK 1 gallon

Vendor:
Athena Ag

Regular price $34.62

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

Sale
Liquid Koolbloom 1 qt

Liquid Koolbloom 1 qt

Vendor:
General Hydroponics

Regular price $30.19

Regular price ~~$30.18~~ Sale price $30.19
Mendocino Avalanche Qt

Sold out

Mendocino Avalanche Qt

Vendor:
Grow More

Regular price $27.16

Regular price ~~$27.43~~ Sale price $27.16

Sold out
Clearex Salt Leaching Solution 1 qt

Clearex Salt Leaching Solution 1 qt

Vendor:
Botanicare

Regular price $17.86

Regular price ~~$17.86~~ Sale price $17.86
Biobizz Top-Max - Flowering Strengthener 5 L

Sale

Biobizz Top-Max - Flowering Strengthener 5 L

Vendor:
Biobizz

Regular price $79.85

Regular price ~~$205.99~~ Sale price $79.85

Sale
RAW Potassium 2 oz

Sold out

RAW Potassium 2 oz

Vendor:
NPK Industries

Regular price $9.75

Regular price ~~$9.85~~ Sale price $9.75

Sold out
RAW Cane Molasses 2 oz

Sold out

RAW Cane Molasses 2 oz

Vendor:
NPK Industries

Regular price $12.72

Regular price ~~$12.85~~ Sale price $12.72

Sold out
Mills Vitalize 250mL

Sold out

Mills Vitalize 250mL

Vendor:
Mills Nutrients

Regular price $82.50

Regular price ~~$90.00~~ Sale price $82.50

Sold out
Mills Ultimate PK 1L

Sold out

Mills Ultimate PK 1L

Vendor:
Mills Nutrients

Regular price $73.33

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

Sold out
CES Sour-Dee 1 qt

CES Sour-Dee 1 qt

Vendor:
Cutting Edge Solutions

Regular price $23.75

Regular price ~~$23.75~~ Sale price $23.75
Bushdoctor Boomerang 1 qt

Sale

Bushdoctor Boomerang 1 qt

Vendor:
Foxfarm

Regular price $33.46

Regular price ~~$33.99~~ Sale price $33.46

Sale
Foxfarm Bushdoctor CalMag 1 qt

Sold out

Foxfarm Bushdoctor CalMag 1 qt

Vendor:
Foxfarm

Regular price $26.48

Regular price ~~$26.99~~ Sale price $26.48

Sold out
Beastie Bloomz 1lb.

Sold out

Beastie Bloomz 1lb.

Vendor:
Foxfarm

Regular price $57.02

Regular price ~~$52.99~~ Sale price $57.02

Sold out
Down to Earth Solution Grade Calcium 96 5 lb

Sold out

Down to Earth Solution Grade Calcium 96 5 lb

Vendor:
Down to Earth

Regular price $14.49

Regular price ~~$14.89~~ Sale price $14.49

Sold out
Down to Earth Solution Grade Gypsum 5 lb

Sold out

Down to Earth Solution Grade Gypsum 5 lb

Vendor:
Down to Earth

Regular price $14.66

Regular price ~~$13.69~~ Sale price $14.66

Sold out
Sweet Carbo Raw 1 qt

Sold out

Sweet Carbo Raw 1 qt

Vendor:
Botanicare

Regular price $39.03

Regular price ~~$41.76~~ Sale price $39.03

Sold out
Cal-Mag Plus 2.5 gal

Sold out

Cal-Mag Plus 2.5 gal

Vendor:
Botanicare

Regular price $119.93

Regular price ~~$137.10~~ Sale price $119.93

Sold out
Pure Blend Tea 1 gal

Sold out

Pure Blend Tea 1 gal

Vendor:
Botanicare

Regular price $47.06

Regular price ~~$49.42~~ Sale price $47.06

Sold out
Biobizz CalMag - Calcium & Magnesium Plant Fertilizer 5 L

Sold out

Biobizz CalMag - Calcium & Magnesium Plant Fertilizer 5 L

Vendor:
Biobizz

Regular price $73.05

Regular price ~~$116.14~~ Sale price $73.05

Sold out
Hygrozyme L

Sold out

Hygrozyme L

Vendor:
SIPCO

Regular price $50.48

Regular price ~~$41.99~~ Sale price $50.48

Sold out

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CO2 Swaps - $12.49 + Tax

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