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  Our Catalog   Gardening & Lawn Care   Indoor Gardening & Hydroponics

Indoor Gardening & Hydroponics - Mega Sale! Save up to 25%


Mega Sale! Up to 25% off on Indoor Gardening & Hydroponics at Knock Knock. Top brands include Lonionlay, Nutrilife, Gavita, Unknown, Botanicare, MAXBRHYDRO, YaeTek, Niontionbox, Rhizoflora, Hydro, General Hydroponics, & Panhenly. Hurry! Limited time offers. Offers valid only while supplies last.



Premier Horticulture Pro Mix BX Biofungicide & Mycorrhizae Purpose Medium Fun...
Premier Horticulture Pro Mix BX Biofungicide & Mycorrhizae Purpose Medium Fun...
In Stock
$105.49

ean: 0714639204714,

Premier Horticulture Pro Mix BX Biofungicide & Mycorrhizae Purpose Medium Fun... Product Overview Premier Horticulture Pro Mix BX Biofungicide & Mycorrhizae Purpose Medium Fun... Product Overview Premier Horticulture Pro Mix BX Biofungicide & Mycorrh...


Nutrilife Nutrilife SM90 Prod Carrier - 10 Liter
Nutrilife Nutrilife SM90 Prod Carrier - 10 Liter
In Stock
$164.46

ean: 0714639490452,

Nutrilife Nutrilife SM90 Prod Carrier - 10 Liter Product Overview A multi purpose wetting agent that improves spray coverage in soil and on plants and increases the speed of moisture penetration in soils and growing medias. Additionally, it reduces t...


Gavita Pro 6/750e DE Flex (400-825 Watt) 120/240 Volt
Gavita Pro 6/750e DE Flex (400-825 Watt) 120/240 Volt
In Stock
$399.77

ean: 0714639461407,

Gavita Pro 6/750e DE Flex (400-825 Watt) 120/240 Volt Product Overview Not only a brand new fixture, but also a brand new lamp! The new Gavita 6/750W 400V EL DE lamp has an efficiency of 2 umol s-1 per Watt in a wide control range of 600-825W. Now th...


Leader Pumps 727982 Ecotronic Booster Jet Pump, 1260 GPH
Leader Pumps 727982 Ecotronic Booster Jet Pump, 1260 GPH
In Stock
$426.54

ean: 0714639444677,

Leader Pumps 727982 Ecotronic Booster Jet Pump, 1260 GPH Product Overview Style: 1 HP Style:1 HP High reliable electronic booster sets for supplying water for domestic applications. Equipped with an electronic safety device that protects the pump fro...


Botanicare 5 gallon Hydroguard Fertilizer
Botanicare 5 gallon Hydroguard Fertilizer
In Stock
$197.77

mpn: LEPUSALLPMB330, ean: 0714639461346,

Botanicare 5 gallon Hydroguard Fertilizer Product Overview Hydro guard is back with a new, clean look & a more powerful, concentrated formula. Hydro guard's reformulation makes it even more effective than before. It's unique formula, available exclus...


1200W LED Grow Lights 12-band Full Spectrum Plant Growing Light with UV/IR for Veg and Flower
1200W LED Grow Lights 12-band Full Spectrum Plant Growing Light with UV/IR for Veg and Flower
In Stock
$320.01
$240.00
You Save: 25%

ean: 0658126304306,

4.1 out of 5 stars with 20 reviews
MAXBRHYDRO led grow lights are the gains of 5-year continuously research and testing,After testing, the wavelength of the LED plant lamp is very suitable for the growth of plants, flowering, the results. General indoor plant flowers, will grow over t...


YaeTek 800W/1200W/1800W Full Spectrum COB LED Grow Light System Panel Lamp Indoor Flower Veg Plant Yard Garden (1800W)
YaeTek 800W/1200W/1800W Full Spectrum COB LED Grow Light System Panel Lamp Indoor Flower Veg Plant Yard Garden (1800W)
In Stock
$219.99

ean: 0602989769079,

Compared to normal LED grow lights, our latest integrated COB of LEDs effectively improves the color uniformity and luminous efficiency, which make a great help in the vegetative and blooming stage of your plants. Professional optical reflector signi...


Gavita Pro 600e SE (300-660 Watt) 120/240 Volt
Gavita Pro 600e SE (300-660 Watt) 120/240 Volt
In Stock
$452.50

ean: 0714639516893,

Gavita Pro 600e SE (300-660 Watt) 120/240 Volt Product Overview Product Number: 906086 The Gavita Pro 600e SE is part of the new Gavita e-series fixtures that are suitable for remote control with the Gavita Master Controllers. Equipped with a 1190 um...


General Hydroponics Armor Si Silica, 2.5 Gallons ,,#G434G14 1T4G3484TYG401731
General Hydroponics Armor Si Silica, 2.5 Gallons ,,#G434G14 1T4G3484TYG401731
In Stock
$107.71

ean: 0714639456977,

General Hydroponics Armor Si Silica, 2.5 Gallons ,,#G434G14 1T4G3484TYG401731 Product Overview General Hydroponics Armor Si Silica, 2.5 Gallons ,,G434G14 1T4G3484TYG401731 Details:Manufacturer: Niontionbox Features: Supplier#-roguehydroponics Contact...


Rhizoflora Terpinator - 24 Liter
Rhizoflora Terpinator - 24 Liter
In Stock
$283.77

ean: 0714639217417,

Rhizoflora Terpinator - 24 Liter Product Overview Details: Shipping Weight: 69 pounds Manufacturer: Rhizoflora Features: You can use Terpinator during the entire life cycle of the plant. Vegetating phases of growth: Add 5-10 ml per gallon of water. R...


Sun Blaze T5 HO 44 - 240 Volt
Sun Blaze T5 HO 44 - 240 Volt
In Stock
$177.82

ean: 0765018479407,

Sun Blaze T5 HO 44 - 240 Volt Product Overview Details: Shipping Information: View shipping rates and policies Manufacturer: HydroExported By ExportYourStore...


General Hydroponics FloraMicro, 6 Gallon
General Hydroponics FloraMicro, 6 Gallon
In Stock
$137.78

ean: 0793094014175,

General Hydroponics FloraMicro, 6 Gallon Product Overview Size: 6 Gallon Size:6 Gallon Flora Series FloraMicro enhances flavor, nutrition, aroma, potency and essential oils in both hydroponic and soil cultivated plants. Flora Series contains highly p...


6 gal. - FloraDuo - Part A - Veg Nutrient - 5-0-6 NPK Ratio - General Hydropo...
6 gal. - FloraDuo - Part A - Veg Nutrient - 5-0-6 NPK Ratio - General Hydropo...
In Stock
$128.12

ean: 0765018480151,

6 gal. - FloraDuo - Part A - Veg Nutrient - 5-0-6 NPK Ratio - General Hydropo... Product Overview FloraDuo is a two-part mineral nutrient FloraDuo A (formerly Grow) and FloraDuo B (formerly Bloom).Using only two components it is possible to mix a lar...


Roots Organics, Roots Ancient Amber Humic Biostimulant, 5-Gallon
Roots Organics, Roots Ancient Amber Humic Biostimulant, 5-Gallon
In Stock
$151.59

ean: 0714639205223,

Roots Organics, Roots Ancient Amber Humic Biostimulant, 5-Gallon Product Overview Roots Organics, Roots Ancient Amber Humic Biostimulant, 5-Gallon Product Overview Size: 5 Gallon Size:5 Gallon Roots Organics Ancient Amber is a highly soluble and dist...


Cutting Edge Solutions Sugaree:2904 Sugaree Growing Additive, 6-Gallon
Cutting Edge Solutions Sugaree:2904 Sugaree Growing Additive, 6-Gallon
In Stock
$237.91

ean: 0714639214508,

Cutting Edge Solutions Sugaree:2904 Sugaree Growing Additive, 6-Gallon Product Overview Size: 6-Gallon Size:6-Gallon Sugaree and Sour-Dee provide and organic carbohydrate and electrolyte source to stimulate amino acid production and adds a carbohydr...


General Hydroponics Kool Bloom Dry 16 lbs pounds - koolbloom nutrient bloom ;...
General Hydroponics Kool Bloom Dry 16 lbs pounds - koolbloom nutrient bloom ;...
In Stock
$174.27

ean: 0796529892911,

General Hydroponics Kool Bloom Dry 16 lbs pounds - koolbloom nutrient bloom ... Product Overview General Hydroponics Kool Bloom Dry 16 lbs pounds - koolbloom nutrient bloom PMN4534TG48 3464YHRE1400 Features: Supplier_by_thehydrosource Please communic...


Leader Pumps 727960 Ecoplus 230 1/2 HP Horizontal Multistage Pump, 1-115V
Leader Pumps 727960 Ecoplus 230 1/2 HP Horizontal Multistage Pump, 1-115V
In Stock
$289.14

ean: 0765018479117,

Leader Pumps 727960 Ecoplus 230 1/2 HP Horizontal Multistage Pump, 1-115V Product Overview Style: 1/2 HP Style:1/2 HP Highly reliable self priming Horizontal Multistage Pumps. They are low noise with high flow and pressure performances, with 2, 3 or ...


FloraDuo B 726895 GH FLORA DUO B 6 GAL
FloraDuo B 726895 GH FLORA DUO B 6 GAL
In Stock
$121.67

ean: 0765018456644,

FloraDuo B 726895 GH FLORA DUO B 6 GAL Product Overview FloraDuo is a revolutionary new fertilizer product. Using only two components growers can mix a large range of different nutrient blends for different kinds of plants and for phases of growth fr...


General Hydroponics CaliMagic, 6-Gallon
General Hydroponics CaliMagic, 6-Gallon
In Stock
$153.88

ean: 0765018479797,

General Hydroponics CaliMagic, 6-Gallon Product Overview Size: 6 Gallon Size:6 Gallon CaliMagic TM is a concentrated blend of readily available Calcium and Magnesium. It is formulated to assist fast growing plants by preventing secondary nutrient def...


Botanicare BCSIB5GAL 5-Gallon Botanicare Silica Blast Yield Enhancer for Plants
Botanicare BCSIB5GAL 5-Gallon Botanicare Silica Blast Yield Enhancer for Plants
In Stock
$172.13

ean: 0765018480113,

Botanicare BCSIB5GAL 5-Gallon Botanicare Silica Blast Yield Enhancer for Plants Product Overview Size: 5 Gallon Size:5 Gallon Botanicare silica blast yield enhancer. Helps strengthen plant tissue helping plants flourish in adverse environmental condi...



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