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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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167 products

Biobizz CalMag - Calcium & Magnesium Plant Fertilizer 1 Liter

Sale

Biobizz CalMag - Calcium & Magnesium Plant Fertilizer 1 Liter

Vendor:
Biobizz

Regular price $18.17

Regular price ~~$28.86~~ Sale price $18.17

Sale
Biobizz Acti-Vera - Aloe Vera Derrived Plant Nutrient Additive 1 Liter

Sale

Biobizz Acti-Vera - Aloe Vera Derrived Plant Nutrient Additive 1 Liter

Vendor:
Biobizz

Regular price $36.39

Regular price ~~$51.99~~ Sale price $36.39

Sale
Biobizz Bio-Heaven Organic Metabolic Stimulator 1 L

Sale

Biobizz Bio-Heaven Organic Metabolic Stimulator 1 L

Vendor:
Biobizz

Regular price $78.39

Regular price ~~$111.99~~ Sale price $78.39

Sale
Biobizz Top-Max - Flowering Strengthener 1 Liter

Sale

Biobizz Top-Max - Flowering Strengthener 1 Liter

Vendor:
Biobizz

Regular price $44.09

Regular price ~~$62.99~~ Sale price $44.09

Sale
Biobizz Alg-A-Mic - Seaweed Extract Supplement

Sale

Biobizz Alg-A-Mic - Seaweed Extract Supplement

Vendor:
Biobizz

Regular price $31.49

Regular price ~~$44.99~~ Sale price $31.49

Sale
SLF-100 - Organic Enzymatic Formula 1 qt

Sale

SLF-100 - Organic Enzymatic Formula 1 qt

Vendor:
South Cascade Organics

Regular price $30.59

Regular price ~~$35.99~~ Sale price $30.59

Sale
Garden of Oz Upcycled Bokashi

Sale

Garden of Oz Upcycled Bokashi

Vendor:
Garden of Oz

Regular price From $13.48

Regular price ~~$14.98~~ Sale price From $13.48

Sale
Real Growers Recharge - Natural Plant Growth Stimulant Powder

Real Growers Recharge - Natural Plant Growth Stimulant Powder

Vendor:
Real Growers

Regular price From $9.95

Regular price ~~$9.95~~ Sale price From $9.95
CaliMagic Qt

Sale

CaliMagic Qt

Vendor:
General Hydroponics

Regular price $23.94

Regular price ~~$25.14~~ Sale price $23.94

Sale
Cal-Mag Plus 1 gal

Sale

Cal-Mag Plus 1 gal

Vendor:
Botanicare

Regular price $55.01

Regular price ~~$62.90~~ Sale price $55.01

Sale
Athena Cleanse 1 gal

Sale

Athena Cleanse 1 gal

Vendor:
Athena Ag

Regular price $39.49

Regular price ~~$50.00~~ Sale price $39.49

Sale
Winter Frost - Resin Enhancer

Sold out

Winter Frost - Resin Enhancer

Vendor:
New Millenium

Regular price From $42.00

Regular price ~~$48.28~~ Sale price From $42.00

Sold out
Athena Cal Mag 1 gal

Sale

Athena Cal Mag 1 gal

Vendor:
Athena Ag

Regular price $34.62

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

Sale
BioAg Ful-Power gal

BioAg Ful-Power gal

Vendor:
BioAg

Regular price $66.32

Regular price ~~$52.99~~ Sale price $66.32
GREASE Bison Brew 4 lb Bag - Bison Compost

GREASE Bison Brew 4 lb Bag - Bison Compost

Vendor:
Fractal Growth

Regular price $29.97

Regular price ~~$29.97~~ Sale price $29.97
Big Bloom Liquid Concentrate 1 qt

Big Bloom Liquid Concentrate 1 qt

Vendor:
Foxfarm

Regular price $24.35

Regular price ~~$23.99~~ Sale price $24.35
KoolBloom 2.2 lbs

Sale

KoolBloom 2.2 lbs

Vendor:
General Hydroponics

Regular price $38.88

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

Sale
Cal-Mag Plus 1 qt

Sale

Cal-Mag Plus 1 qt

Vendor:
Botanicare

Regular price $22.05

Regular price ~~$24.13~~ Sale price $22.05

Sale
Photosynthesis Plus 32oz

Sale

Photosynthesis Plus 32oz

Vendor:
Ecological Laboratories

Regular price $31.67

Regular price ~~$32.99~~ Sale price $31.67

Sale
Cutting Edge Solutions Amplified Cal-Mag Quart

Sale

Cutting Edge Solutions Amplified Cal-Mag Quart

Vendor:
Cutting Edge Solutions

Regular price $22.76

Regular price ~~$23.99~~ Sale price $22.76

Sale

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CO2 Swaps - $12.49 + Tax

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