St. Louis Hydroponic Company is the city's premier hydroponic and indoor garden retail store. We are open everyday from 10 AM - 6 PM

Additives and Boosters

Home / Fertilizers and Nutrients / Additives and Boosters
Min: $0
Max: $600
The Guano Company The Guano Company Budswel Liquid, gal

The Guano Company Budswel Liquid, gal

 $52.49
Build A Soil BuildASoil Jay Plantspeaker’s Quillaja Saponaria Extract Powder 2 oz.

BuildASoil Jay Plantspeaker’s Quillaja Saponaria Extract Powder 2 oz.

 $44.00
Grease Grease - Amber Label All Plants, Especially Sativas 250 mL

Grease - Amber Label All Plants, Especially Sativas 250 mL

 $74.97
CYCO CYCO Supa Stiky, 5 L

CYCO Supa Stiky, 5 L

 $225.49
Power Si - 500 ML

Power Si - 500 ML

 $120.00
Grease Grease - Gold Label All Plants, Especially Hybrids 500 mL

Grease - Gold Label All Plants, Especially Hybrids 500 mL

 $127.97
Malibu Compost Malibu Compost Compost Tea for Fruits, Vegetables & Tomatoes - Fruit and Vegetables - 4pk / 4 Single-Use Teabags

Malibu Compost Compost Tea for Fruits, Vegetables & Tomatoes - Fruit and Vegetables - 4pk / 4 Single-Use Teabags

 $19.99
Athena Athena Balance Silica 1 Gallon

Athena Balance Silica 1 Gallon

 $45.00
Current Culture Coco Cal Gallon

Current Culture Coco Cal Gallon

 $44.95
House & Garden House and Garden Nitrogen Boost 1 Liter

House and Garden Nitrogen Boost 1 Liter

 $64.26
Advanced Nutrients Advanced Rhino Skin 1L

Advanced Rhino Skin 1L

 $38.68
CYCO CYCO Dr. Repair 20 L

CYCO Dr. Repair 20 L

 $297.88
General Hydroponics General Hydroponics RapidStart L

General Hydroponics RapidStart L

 $200.50
Botanicare Botanicare Sweet Raw, qt

Botanicare Sweet Raw, qt

 $37.54
Fox Farm FoxFarm Beastie Bloomz 1 lb

FoxFarm Beastie Bloomz 1 lb

 $45.95
Spray-N-Grow Spray-N-Grow Coco-Wet, 8 oz

Spray-N-Grow Coco-Wet, 8 oz

 $12.49
CYCO CYCO Suga Rush, 5 L

CYCO Suga Rush, 5 L

 $107.22
CYCO CYCO Silica 20 L

CYCO Silica 20 L

 $244.99
General Hydroponics GH Armor Si, qt

GH Armor Si, qt

 $20.48
Grease - Alfalfa Extract 250 mL

Grease - Alfalfa Extract 250 mL

 $70.95
Grease Grease - Purple Label All Plants, Especially Indicas 250 mL

Grease - Purple Label All Plants, Especially Indicas 250 mL

 $74.97
Grease Grease - Green Label All Plants, Especially Hemp, Cannabis Sativa 500 mL

Grease - Green Label All Plants, Especially Hemp, Cannabis Sativa 500 mL

 $127.97
Grease Grease - Gold Label All Plants, Especially Hybrids 250 mL

Grease - Gold Label All Plants, Especially Hybrids 250 mL

 $74.97
BuildASoil Fermented Hemp Extract Gallon

BuildASoil Fermented Hemp Extract Gallon

 $66.00
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