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Best selling products: Best General Hydroponics Additives&Supplements Control for Hydroponics

BestsellingTop Rated
General Hydroponics 722125 pH Down Liquid Fertilizer - 1 Gallon
Rank 1
General Hydroponics 722125 pH Down Liquid Fertilizer - 1 Gallon
(50)
$32.99 New
No used products available
FoxFarm Grow Big Liquid Concentrate - 1qt
Rank 2
FoxFarm Grow Big Liquid Concentrate - 1qt
(52)
$24.79 New
No used products available
MasterBlend 4-18-38 Tomato & Vegetable Fertilizer 5 Pound Formula
Rank 3
MasterBlend 4-18-38 Tomato & Vegetable Fertilizer 5 Pound Formula
(47)
$13.99 New
No used products available
General Hydroponics GH1532 pH Down Liquid Fertilizer - 1 Quart
Rank 4
General Hydroponics GH1532 pH Down Liquid Fertilizer - 1 Quart
(107)
$16.75 New
$10.00 Used
Xtreme Gardening 721205 Mykos 2.2lbs.
Rank 5
Xtreme Gardening 721205 Mykos 2.2lbs.
(32)
$27.95 New
No used products available
General Hydroponics pH Up Liquid Premium Buffering For pH Stability - 1 gal
Rank 6
General Hydroponics pH Up Liquid Premium Buffering For pH Stability - 1 gal
(16)
$32.79 New
No used products available
Advanced Nutrients Grow Micro Bloom Base Nutrient 1L - 3 Pieces
Rank 7
Advanced Nutrients Grow Micro Bloom Base Nutrient 1L - 3 Pieces
(41)
$15.97 New
No used products available
MasterBlend 4-18-38 Fertilizer Combo Kit - 25lbs
Rank 8
MasterBlend 4-18-38 Fertilizer Combo Kit - 25lbs
(10)
$24.95 New
No used products available
Botanicare BC32303 Plant Growth Enhancer - 1 Gallon
Rank 9
Botanicare BC32303 Plant Growth Enhancer - 1 Gallon
(16)
$20.69 New
No used products available
FoxFarm FX14019 Tiger Bloom Fertilizer - 1qt
Rank 10
FoxFarm FX14019 Tiger Bloom Fertilizer - 1qt
(53)
$24.79 New
No used products available
Miracle-Gro AeroGarden Liquid Plant Fertilizer for Use in AeroGarden Hydroponic
Rank 11
Miracle-Gro AeroGarden Liquid Plant Fertilizer for Use in AeroGarden Hydroponic
(17)
$12.95 New
No used products available
Plant Success Great White Mycorrhizae - 8 oz
Rank 12
Plant Success Great White Mycorrhizae - 8 oz
(36)
$49.97 New
No used products available
FoxFarm FX14007 Grow Big Soil Liquid Concentrate Fertilizer - 1 Gallon
Rank 13
FoxFarm FX14007 Grow Big Soil Liquid Concentrate Fertilizer - 1 Gallon
(29)
$74.95 New
No used products available
FoxFarm FX14011 Grow Big Hydroponic Liquid Concentrate Fertilizer - 1 Gallon
Rank 14
FoxFarm FX14011 Grow Big Hydroponic Liquid Concentrate Fertilizer - 1 Gallon
(4)
$44.99 New
No used products available
FoxFarm Bush Doctor Nutrients Fertilizer - 1lb (FX17010)
Rank 15
FoxFarm Bush Doctor Nutrients Fertilizer - 1lb (FX17010)
(7)
$19.88 New
No used products available
CANNA 9340005 Boost Accelerator - 5L
Rank 16
CANNA 9340005 Boost Accelerator - 5L
(8)
$275.00 New
No used products available
FoxFarm FX14109 Dirty Dozen Starter Kit Nutrient Additive
Rank 17
FoxFarm FX14109 Dirty Dozen Starter Kit Nutrient Additive
(64)
$67.50 New
No used products available
General Hydroponics CALiMAGic GH1772 Calcium-Magnesium Supplement - 0.25 gal
Rank 18
General Hydroponics CALiMAGic GH1772 Calcium-Magnesium Supplement - 0.25 gal
(55)
$17.00 New
No used products available
FoxFarm Tiger Bloom Fertilizer - White, 1-Gallon
Rank 19
FoxFarm Tiger Bloom Fertilizer - White, 1-Gallon
(29)
$68.99 New
No used products available
Advanced Nutrients Rhino Skin Potassium Silicate - 1L
Rank 20
Advanced Nutrients Rhino Skin Potassium Silicate - 1L
(25)
$19.88 New
No used products available
General Hydroponics pH Up Liquid 32 Oz
Rank 21
General Hydroponics pH Up Liquid 32 Oz
(7)
$16.75 New
No used products available
General Hydroponics GH Flora Series 16oz. Nutrients
Rank 22
General Hydroponics GH Flora Series 16oz. Nutrients
(22)
$32.90 New
No used products available
Xtreme Mykos Pure Mycorrhizal Inoculum, Granular - 1 lb
Rank 23
Xtreme Mykos Pure Mycorrhizal Inoculum, Granular - 1 lb
(31)
$22.99 New
No used products available
Advanced Nutrients Rhino Skin Fertilizer 250ml
Rank 24
Advanced Nutrients Rhino Skin Fertilizer 250ml
(31)
$11.69 New
No used products available
Advanced Nutrients 6360-14 Sensi Cal Mag Xtra Fertilizer - 1L
Rank 25
Advanced Nutrients 6360-14 Sensi Cal Mag Xtra Fertilizer - 1L
(29)
$23.89 New
No used products available
General Hydroponics FloraNova Grow GH1622 Fertilizer (718800)- 1 Quart
Rank 26
General Hydroponics FloraNova Grow GH1622 Fertilizer (718800)- 1 Quart
(30)
$27.49 New
No used products available
Canna 9321001 Rhizotonic Rooting Stimulator - 10L
Rank 27
Canna 9321001 Rhizotonic Rooting Stimulator - 10L
(4)
$48.95 New
No used products available
Dyna-Gro Liquid Grow Gallon Plant Food Fertilizer Hydroponics Bloom
Rank 28
Dyna-Gro Liquid Grow Gallon Plant Food Fertilizer Hydroponics Bloom
(10)
$24.95 New
No used products available
General Hydroponics MaxiGro Plant Food - 2.2lbs
Rank 29
General Hydroponics MaxiGro Plant Food - 2.2lbs
(13)
$18.99 New
No used products available
General Hydroponics Hgc732802 Armor SI Plant Growth Enhancement Quart
Rank 30
General Hydroponics Hgc732802 Armor SI Plant Growth Enhancement Quart
(25)
$21.38 New
No used products available
Advanced Nutrients 4020-15 Rhino Skin
Rank 31
Advanced Nutrients 4020-15 Rhino Skin
(6)
$51.99 New
No used products available
General Hydroponics FloraNova Bloom Liquid Supplement - 1 Quart
Rank 32
General Hydroponics FloraNova Bloom Liquid Supplement - 1 Quart
(10)
$23.49 New
No used products available
Advanced Nutrients 130115 Grow PH Fertilizer - 4L
Rank 33
Advanced Nutrients 130115 Grow PH Fertilizer - 4L
(4)
$35.99 New
No used products available
Nirvana Organic Biostimulant (Advanced Nutrients) (355014)
Rank 34
Nirvana Organic Biostimulant (Advanced Nutrients) (355014)
(14)
$19.99 New
No used products available
Plant Success Great White Mycorrhizae Powder - 4oz
Rank 35
Plant Success Great White Mycorrhizae Powder - 4oz
(65)
$32.95 New
No used products available
Plant Success Great White Mycorrhizae - 1 Quart
Rank 36
Plant Success Great White Mycorrhizae - 1 Quart
$115.00 New
No used products available
Mykos RT4401 Mycorrhizae Granular 1-Lb Pure Fresh Alive Xtreme Gardening
Rank 37
Mykos RT4401 Mycorrhizae Granular 1-Lb Pure Fresh Alive Xtreme Gardening
(5)
$21.89 New
No used products available
Advanced Nutrients Rhino Skin Potassium Hydroponic Additive - 10L
Rank 38
Advanced Nutrients Rhino Skin Potassium Hydroponic Additive - 10L
(1)
$142.99 New
No used products available
General Hydroponics MaxiBloom Plant Food for Flowers - 2.2 lbs
Rank 39
General Hydroponics MaxiBloom Plant Food for Flowers - 2.2 lbs
(32)
$19.85 New
No used products available
Advanced Nutrients 6101-15 Lawn Nutrient Package, 4 L
Rank 40
Advanced Nutrients 6101-15 Lawn Nutrient Package, 4 L
(4)
$45.99 New
No used products available
Botanicare NBHGQT Fertilizer - 1 Quart
Rank 41
Botanicare NBHGQT Fertilizer - 1 Quart
(52)
$7.59 New
No used products available
General Hydroponics RapidStart Rooting Enhancer - 1 Gallon
Rank 42
General Hydroponics RapidStart Rooting Enhancer - 1 Gallon
$21.69 New
No used products available
General Hydroponics FloraBloom Gh1432 2.5 Gallon
Rank 43
General Hydroponics FloraBloom Gh1432 2.5 Gallon
(5)
$93.96 New
No used products available
Athena Stack (1 Gallon)
Rank 44
Athena Stack (1 Gallon)
$139.89 New
No used products available
General Hydroponics 718799 FloraNova Grow & Bloom
Rank 45
General Hydroponics 718799 FloraNova Grow & Bloom
(21)
$21.09 New
No used products available
Botanicare Silica Blast Plant Biomass Yield Enhancer, 1-Quart (HGC732485)
Rank 46
Botanicare Silica Blast Plant Biomass Yield Enhancer, 1-Quart (HGC732485)
(13)
$24.59 New
No used products available
Plant Success PRPSGW01 Rooting Stimulator - 1oz
Rank 47
Plant Success PRPSGW01 Rooting Stimulator - 1oz
(38)
$17.81 New
No used products available
Xtreme Gardening Azos 12oz
Rank 48
Xtreme Gardening Azos 12oz
(17)
$40.99 New
No used products available
Fox Farm Open Sesame, Cha Ching and Beastie Bloomz Plant Nutrients Combo Pack Fertilizer - 6oz
Rank 49
Fox Farm Open Sesame, Cha Ching and Beastie Bloomz Plant Nutrients Combo Pack Fertilizer - 6oz
(8)
$19.99 New
No used products available
Dyna-Gro Grow Concentrate Liquid Plant Food Veg Nutrient 1 Quart / 32 FL Oz
Rank 50
Dyna-Gro Grow Concentrate Liquid Plant Food Veg Nutrient 1 Quart / 32 FL Oz
(25)
$21.99 New
No used products available
Nectar for The Gods TTG Tritons Trawl 1 Gallon
Rank 51
Nectar for The Gods TTG Tritons Trawl 1 Gallon
(1)
$74.95 New
No used products available
General Hydroponics Koolbloom Gardening Liquid - 1 Quart
Rank 52
General Hydroponics Koolbloom Gardening Liquid - 1 Quart
(37)
$25.85 New
No used products available
Advanced Nutrients pH Perfect Sensi Grow Part A 1L
Rank 53
Advanced Nutrients pH Perfect Sensi Grow Part A 1L
(7)
$18.00 New
No used products available
Botanicare Cal-Mag Plus Calcium, Magnesium and Iron Plant Supplement - 5gal.
Rank 54
Botanicare Cal-Mag Plus Calcium, Magnesium and Iron Plant Supplement - 5gal.
(8)
$204.89 New
No used products available
FoxFarm FX14045 Water Soluble Plant Foods
Rank 55
FoxFarm FX14045 Water Soluble Plant Foods
(20)
$78.98 New
No used products available
Element 1-34-32 Flower Fuel Premium Bloom Booster - 250g
Rank 56
Element 1-34-32 Flower Fuel Premium Bloom Booster - 250g
(31)
$30.40 New
No used products available
FoxFarm Cha Ching 2 lb Nutrient Aditive Plant Food Fertilizers - FX14025
Rank 57
FoxFarm Cha Ching 2 lb Nutrient Aditive Plant Food Fertilizers - FX14025
(3)
$37.99 New
No used products available
Botanicare 704080 Hydroguard Bacillus Root Inoculant
Rank 58
Botanicare 704080 Hydroguard Bacillus Root Inoculant
(21)
$68.50 New
No used products available
General Hydroponics HGC718015 Growth Stimulators - 1 gal
Rank 59
General Hydroponics HGC718015 Growth Stimulators - 1 gal
(33)
$36.85 New
No used products available
Advanced Nutrients Big Bud Liquid Bloom Booster Enhancer
Rank 60
Advanced Nutrients Big Bud Liquid Bloom Booster Enhancer
(5)
$32.99 New
No used products available
Green Green - GAIA GREEN Power Bloom Fertilizer (2kg)
Rank 61
Green Green - GAIA GREEN Power Bloom Fertilizer (2kg)
(5)
$28.99 New
No used products available
FoxFarm Grow Big 32oz Hydroponic Nutrients
Rank 62
FoxFarm Grow Big 32oz Hydroponic Nutrients
(12)
$23.99 New
No used products available
General Hydroponics MaxiGro Rapid Growth 16lb Concentrate (10-5-14)
Rank 63
General Hydroponics MaxiGro Rapid Growth 16lb Concentrate (10-5-14)
(3)
$104.89 New
No used products available
Heavy 16 Prime Concentrate 1 Gallon / 4 Liter Hydroponics Nutrient Grow Bloom
Rank 64
Heavy 16 Prime Concentrate 1 Gallon / 4 Liter Hydroponics Nutrient Grow Bloom
(2)
$140.99 New
No used products available
Humboldt County's Own Snow Storm Ultra 1 Quart - Plant Growth Nutrient QT
Rank 65
Humboldt County's Own Snow Storm Ultra 1 Quart - Plant Growth Nutrient QT
(2)
$46.99 New
No used products available
Advanced Nutrients Piranha Liquid 4l 4 - Beneficial Microbes Root Fungi Gram
Rank 66
Advanced Nutrients Piranha Liquid 4l 4 - Beneficial Microbes Root Fungi Gram
$150.99 New
No used products available
Emerald Harvest Emerald Goddess 1qt 1 Quart
Rank 67
Emerald Harvest Emerald Goddess 1qt 1 Quart
(4)
$12.99 New
No used products available
Hygrozyme Horticultural Enzyme Formula - 4L
Rank 68
Hygrozyme Horticultural Enzyme Formula - 4L
(1)
$27.69 New
No used products available
FoxFarm FX14029 2-Pound Beastie Bloomz
Rank 69
FoxFarm FX14029 2-Pound Beastie Bloomz
(8)
$48.95 New
No used products available
FoxFarm FX14107 1-Quart Bushdoctor Bembe Concentrate Fertilizer
Rank 70
FoxFarm FX14107 1-Quart Bushdoctor Bembe Concentrate Fertilizer
(15)
$27.85 New
No used products available
Botanicare Hgc732635 Pure Blend Tea Terpene Enhancing 1-gallon
Rank 71
Botanicare Hgc732635 Pure Blend Tea Terpene Enhancing 1-gallon
(1)
$36.99 New
No used products available
Gaia Green GAGWC2L Worm Casting - 2L
Rank 72
Gaia Green GAGWC2L Worm Casting - 2L
(2)
$21.85 New
No used products available
General Hydroponics FloraNova Bloom Liquid Nutrient Growth Formula - 1 gallon
Rank 73
General Hydroponics FloraNova Bloom Liquid Nutrient Growth Formula - 1 gallon
(30)
$73.85 New
No used products available
Technaflora Sugar Daddy Hydroponic Plant Supplement - 4L
Rank 74
Technaflora Sugar Daddy Hydroponic Plant Supplement - 4L
$79.99 New
No used products available
Technaflora Recipe for Success Starter Kit (TFPR02006)
Rank 75
Technaflora Recipe for Success Starter Kit (TFPR02006)
(47)
$52.99 New
No used products available
Advanced Nutrients B-52 Fertilizer Booster 500ml
Rank 76
Advanced Nutrients B-52 Fertilizer Booster 500ml
(20)
$24.89 New
No used products available
Botanicare Pure Blend Pro Bloom 1 Gallon Hydroponic Flowering Nutrients 1gal
Rank 77
Botanicare Pure Blend Pro Bloom 1 Gallon Hydroponic Flowering Nutrients 1gal
(13)
$52.98 New
No used products available
General Hydroponics Flora Series Gro Micro Bloom 1 Gallon Gal GH Grow Nutrient
Rank 78
General Hydroponics Flora Series Gro Micro Bloom 1 Gallon Gal GH Grow Nutrient
(37)
$34.90 New
No used products available
Botanicare Silica Blast Plant Supplement 0-0-0.5 Formula 2.5-gallon
Rank 79
Botanicare Silica Blast Plant Supplement 0-0-0.5 Formula 2.5-gallon
(1)
$106.91 New
No used products available
Advanced Nutrients 507014 Big Bud Coco 1 Liter
Rank 80
Advanced Nutrients 507014 Big Bud Coco 1 Liter
(8)
$35.50 New
No used products available
General Hydroponics Floralicious Nutrient Additive - GH1391
Rank 81
General Hydroponics Floralicious Nutrient Additive - GH1391
(4)
$138.49 New
No used products available
Botanicare Sweet Carbo Berry Supplement for Plants, 1-Gallon
Rank 82
Botanicare Sweet Carbo Berry Supplement for Plants, 1-Gallon
(3)
$55.00 New
No used products available
Advanced Nutrients Rhino Skin Fertilizer 500ml
Rank 83
Advanced Nutrients Rhino Skin Fertilizer 500ml
(7)
$18.99 New
No used products available
GH RapidStart Rooting Simulators 275ml (GH1701)
Rank 84
GH RapidStart Rooting Simulators 275ml (GH1701)
(43)
$16.00 New
No used products available
Clonex Cloning Solution, 20ml - 18 Pack
Rank 85
Clonex Cloning Solution, 20ml - 18 Pack
(8)
$7.96 New
No used products available
Technaflora Tfbcbst10l 720550 Fertilizer 10 Liter
Rank 86
Technaflora Tfbcbst10l 720550 Fertilizer 10 Liter
(2)
No new products available
No used products available
Emerald Triangle ETSB5 Flowering Booster
Rank 87
Emerald Triangle ETSB5 Flowering Booster
(1)
$129.95 New
No used products available
Technaflora Sugar Daddy Fertilizers 1 L TFSD1L
Rank 88
Technaflora Sugar Daddy Fertilizers 1 L TFSD1L
(13)
$30.87 New
No used products available
Emerald Triangle 719950 Sonic Bloom Fertilizer 1 LB
Rank 89
Emerald Triangle 719950 Sonic Bloom Fertilizer 1 LB
(8)
$41.99 New
No used products available
General Hydroponics PH Test Indicator 8-Ounce
Rank 90
General Hydroponics PH Test Indicator 8-Ounce
(48)
$15.49 New
No used products available
Advanced Nutrients 3850-14 Ph 1 Liter
Rank 91
Advanced Nutrients 3850-14 Ph 1 Liter
(4)
$22.00 New
No used products available
Emerald Harvest Honey Chome Aroma And Resin Enricher Liquid - 1 Gal
Rank 92
Emerald Harvest Honey Chome Aroma And Resin Enricher Liquid - 1 Gal
(1)
$94.99 New
No used products available
Humboldt County's Own Purple Maxx - Emerald Triangle Snow Storm
Rank 93
Humboldt County's Own Purple Maxx - Emerald Triangle Snow Storm
$21.49 New
No used products available
Advanced Nutrients Piranha Liquid Fertilizer - 1L
Rank 94
Advanced Nutrients Piranha Liquid Fertilizer - 1L
(6)
$40.99 New
No used products available
Advanced Nutrients Piranha Liquid Fertilizer 250ml
Rank 95
Advanced Nutrients Piranha Liquid Fertilizer 250ml
(21)
$19.80 New
No used products available
Advanced Nutrients Ph Bloom Plant Nutrient 1l 1 Liter Litre
Rank 96
Advanced Nutrients Ph Bloom Plant Nutrient 1l 1 Liter Litre
(11)
$16.99 New
No used products available
General Hydroponics HGC718025 FloraBloom Advanced Nutrient System
Rank 97
General Hydroponics HGC718025 FloraBloom Advanced Nutrient System
(1)
$97.99 New
No used products available
EXHALE XL Homegrown Co2 Bag - EX50002
Rank 98
EXHALE XL Homegrown Co2 Bag - EX50002
(12)
$59.99 New
No used products available
Supernatural Super Boost 5lb Nutrient
Rank 99
Supernatural Super Boost 5lb Nutrient
$110.95 New
No used products available
Heavy 16 Roots 1l - Root Stimulator Enhancement Nutrient
Rank 100
Heavy 16 Roots 1l - Root Stimulator Enhancement Nutrient
(3)
$104.94 New
No used products available