Specializing in indoor gardening and hydroponics growing!

Check out some of the lowest grow light systems, and bulb prices.

Safe, secure hydroponics ordering! Satisfaction guaranteed

Our Grand Rapids greenhouse is filled with bonsai trees! Stop by and see our collection. We specialize in tropical indoor bonsai, nutrients, imported bonsai pots, and Joshua Roth tools.  Check out our Bonsai tools and supplies.Foliar feed your plants!

One-stop shopping for indoor gardening supplies, including cloning goods, hydroponics systems, grow room equipment, plant nutrients, HID lighting and bulbs, plus experienced advise when you need it.

 

 

Private, secure online ordering.  No registration needed to order.  Satisfaction is guaranteed!
 

Retail store and Online since 1999!

FREE SHIPPING on orders totaling $250
or more when shipped to lower Continental USA!

HPS and MH bulbs INCLUDED!THRIPS a problem?
Check out our solutions!
 
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Stop by our new store!

What's new at Growco Garden Supply?

BC Northern Light's Nursery - 84 cuttings in 7 days!

Stealth Reservoir Heaters - Lots of sizes!

Hydrofarm Electromechanical Pin Timer

Active Aqua Submersible Pumps - In many sizes!

Dark Room DR120W - New 2' x 4' size grow tent!

ReadyGro Aeration - Grow media for hydroponics!

ReadyGro Moisture - For dry arid conditions!

Plantmax 600W conv bulb - For electronic ballasts!

Plantmax 400W conversion bulb - For HPS ballasts!

Duct Flange - In 4", 6", or 8" sizes!

Lumatek Ballasts - Upgraded versions in stock!

Big Mama - Largest from Grodan block yet - 8x8x8!

Diamond Black - New liquid from General Organics!

Alaska Fish Emulsion - 100% natural - OMRI listed!

EcoPlus Supreme In-Line Blowers - Very affordable!

Sun System HPS 150 - Back in stock!

Power Plant Professional Kit - Includes grow light!

Bio Weed - New General Organics line by GH!

Final Flush Blueberry - Removes salt build-up!

Captain Jack's Deabug Brew - Ready-To-Use!

Europonic Rockwool Conditioner - For pH balance!

Mondi Utility Pump - Moves 1,585 gallons per hour!

Captain Jack's Deadbug Brew - Concentrated!

Yield Up - 1 part fertilizer for fruiting stage!

Why shop at 4hydroponics.com?
FREE shipping on most orders totaling $250 or more when delivered in lower Continental USA.
     (Sorry, Alaska and Hawaii not included.) Oversized or heavyweight items may not be included.
NO sales tax when delivery is outside of Michigan. In some states that's a 10% savings!
VERY competitive pricing.
If you're in Michigan...
No registration needed to place an order.
When we ship your order, magazines or catalogs are liberally included. (More info)
Shipping to Michigan? Expect delivery within 2 business days!
Read customer feedback here.We take your privacy very seriously. Read more...Member Better Business Bureau


If you find a more competitive price, contact us!

 
Table of Contents:

Bonsai Tools & Supplies

Grow Light Bulbs:
All Grow Light Bulbs
Compact fluorescents
Combo Grow Light / Hydroponics Packages
Conversion growlight bulbs
Fluorescent growlight tubes
HID Accessories
High Pressure Sodium (HPS) growlight bulbs
Hybrid MH & HPS combo bulbs
Metal Halide (MH) growlight bulbs
T5 High Output Fluorescent Lamps
Tutorial

Grow Light Equipment:
All Grow Light Systems 
Compact Fluorescents
Complete Grow Light / Hydroponics Packages
Grow Light Accessories
HID Components:
  Glass cylinder (tube) reflectors
  Hydrofarm Ballasts
  Hydrofarm Reflectors
  Sunleaves Ballasts
  Sunleaves Reflectors
  Sunlight Supply Ballasts
  Sunlight Supply Reflectors
Greenhouse HID Light Fixtures
Hydrofarm Grow Light Packages

LED Grow Lights
Light Movers
Sunleaves Grow Light Packages
Sunlight Supply Grow Light Packages

T5 High Output Fluorescent Lighting
Tutorial 

Grow Room Supplies:
Air Cleaners
Atmospheric / Climate Controls
CO2 Generators
CO2 Injection and Testers
Composting Supplies
Exhaust Fans
Exhaust Fan Filters
Garden Tools
Grow Room Enclosures
Growing Mediums
Light Movers & Reflective Sheeting
Misters & Measurers
Odor Control
Pest & Disease Control
pH, EC/TDS, PPM Controllers, Monitors & Testers
Plant pots and containers
Pumps and Plumbing
Reservoirs and Trays
Timers and HID Controls
Water Purifiers

Reference Material
Books / DVDs
Feeding Charts / Application Rates
Gardening Abbreviations
Installation Manuals
Liquid Conversions
PPM / EC Conversions
Temperature Conversions

Healthy Lifestyles

Track Your Order

 

Hydroponics:
All Hydroponics Systems 
Aeroponics
Cloning Machines
Combo Hydroponics / Grow Light Packages
Deep Water Culture (passive) Hydroponics
Drip (Top-Feed) Hydroponics Systems
Ebb & Flow Hydroponics Systems
Grow Tents (closet hydroponics)
Hydroponics Maintenance
Pumps and Plumbing
Reservoirs and Plant Trays
Rotating Hydroponics Gardens
Tutorial - Hydroponics

Vertical Hydroponics Gardens
Water Purifiers

Nutrients and Fertilizers:
Brand Name categories
Foliar Sprays
Organic Plant Food
Nutrients 
Nutrient Additives / Supplements

Plant Propagation Solutions / Nutrients 

Organic Seeds

Plant Propagation / Cloning:
Cloning Machines
Cloning Gels and Solutions
Cloning / Plant Propagation Nutrients
Cloning Machine / Grow Light Packages
Grow Lights / Height Adjusters
Starter Plugs and Trays
Pots and Containers

Questions and Answers (FAQ)
Can-Fan / Can-Filter Setup
Growing Vegetables Indoors
Growroom Odor Control
LED Growlight Facts
Root Rot and Hydroponic Systems
Thrip Facts
Winter Survival for Houseplants

Product List:
Books / Printed Reference Material
Cloning / Plant Propagation
Grow Light Replacement Bulbs and Tubes
  Compact Fluorescents
  Fluorescent Tubes
  HID Conversion Bulbs
  HID Metal Halide (MH) Bulbs
  HID High Pressure Sodium (HPS) Bulbs
  High Output Fluorescent Lamps 
Grow Light Systems
Grow Room Supplies:
  Air Purification
  Atmospheric Controls
  CO2 Systems and Generators
  Composting Supplies
  Exhaust Fans and Filters
  Growing Mediums and Containers
  Light Movers & Reflective Sheeting
  Odor Control
  Pest Control
  pH, TDS, PPM, EC Measuring and Control
  Timers
Hydroponics Nutrients
Hydroponics Plant Propagation
Hydroponics Systems

 Hydro Maintenance
  Pumps and Plumbing
 Reservoirs and Trays

 

 

Call or email us for quantity discounts!

 
Growco Indoor Garden Supply
1042 Michigan NE  ·  Grand Rapids, Michigan USA  49503-1908
phone: (616) 454-6900  ·  toll free: 877-939-6900
email

1999-2009 © Copyright Growco Garden Supply
Updated 11/10/09