Growco Indoor Garden Supply

Information may not be reliable

Specializing in indoor gardening and hydroponics growing!

Welcome back indoor gardeners! Name brand atmospheric controllers now on sale! Check it out.

Growco Indoor Garden Supply opened for business in 1999
and we've been supplying both hobbyist and professional gardeners with quality merchandise through our retail store and website for over 10 years! We're here to supply you with the best products that the industry has to offer, all at competitive and affordable pricing.

We spare no expense in our shipping department to see that your order will reach you in perfect condition - satisfaction and privacy guaranteed! We warehouse all of our products, and pride ourselves in getting your order to you fast!

Our staff has many years of hands-on experience helping customers build grow rooms, dial in nutrient programs, and make seriously productive gardens. Feel free to give us a call with any questions you may have, we're here to help you.
Private, secure online ordering. No registration needed to order. Satisfaction is guaranteed!

Retail store and Online since 1999!

on most orders totaling $250 or more when shipped to lower Continental USA!
Stop in our retail store and experience a true grow shop!
Our greenhouse is filled with bonsai trees and hydroponics systems, and all of our products are on display for you to check out in person. We welcome your visit, and it will be worth your time to make the trip! Map to our store
THRIPS a problem?
Check out our solutions!
Shipping & Payment Policies
Privacy Protection Statement

What's new at Growco Indoor Garden Supply?

400W Digilux MH bulb - Burns horizontal or vertical!

Digilux 1000W MH - Higher red/orange spectrums!

Carson zOrb Digital Microscope - 35X on your PC!

Phresh Filters - Half the weight plus twice the CFM!

Powerbox DPC-7500 Combo - 240V & 120V outlets!

Powerbox Flipbox - Runs 2 hoods on 1 ballast!

Powerbox DPC-7500 120V - Controls 6 HID lights!

Powerbox DPC-7500 - The 240V, 6 outlet controller!

Reflective Sheeting - Now in its own category!

ORCA Grow Film - Full spectrum light reflectance!

CAP MLC12X+4 - Light control for 12 HID systems!

CAP MLC20+4 - 20 unit master lighting controller!

24 HID Light Controller - The largest made by CAP!

BushDoctor Kangaroots - Organic root builder!

BushDoctor Microbe Brew - Microbial inoculate!

BushDoctor Sledgehammer - Clean those roots!

Oakton Multi PT Testr 35 - Temps, pH and TDS!

GroZone Dual-Zone CO2 Controller - Runs 2 areas!

VSC-DNe Variable Fan Speed Controller - Day/Night!

Raptor 8" Air Cooled Reflector - One of the big boys!

BioAg Ful-Power - The champagne of Humic Acids!

45" Vertical Reflector and Housing Unit - From HF!

Why shop at 4hydroponics.com?

◊ FREE shipping on most orders $250 or more when delivered in lower Continental USA. (Sorry, Alaska and Hawaii not included.) Oversized or heavyweight items not included.
◊ NO sales tax when delivery is outside of Michigan. In some states that's a 10% savings!
◊ VERY competitive pricing.
◊ No registration needed to place an order.
◊ When we ship your order, magazines or catalogs are liberally included. (More info)
◊ Read customer feedback here.

Shipping to Michigan? Expect delivery within 2 business days!

PPM / EC Conversions
Convert Liquid Volumes
Grow Light Tutorial

Compact fluorescent bulbs
Combo Grow Light / Hydroponics Packages
Conversion growlight bulbs
Fluorescent growlight tubes
High Pressure Sodium (HPS) growlight bulbs
Hybrid MH & HPS combo bulbs
Metal Halide (MH) growlight bulbs
Eye Hortilux lamps - FREE SHIPPING!

Cloning / Plant Propagation:

Cloning Gels and Solutions
Cloning / Plant Propagation Nutrients
Cloning Machine / Grow Light Packages
Grow Lights / Height Adjusters

Starter Plugs and Trays
Pots and Containers
Grow Light Equipment:

Hydrofarm Powerhouse ballasts Hydrofarm Xtrasun ballasts Lumatek ballasts (Hydrofarm plug) Lumatek ballasts (SS type plug) NexGen Digital Ballasts Quantum Dimmable ballasts Sunlight Supply Galaxy ballasts Sunlight Supply Harvest Pro Elite ballasts
Compact Fluorescent Fixtures
Complete Grow Light / Hydroponics Packages
Fluorescent Lighting Fixtures
Greenhouse HID Light Fixtures
Grow Light System Packages: Hydrofarm Grow Light Packages NextGen Ballast Grow Light Packages Quantum Ballast Grow Light Packages Sunlight Supply Grow Light Packages
LED Grow Lights

Reflective Sheeting/Films
Reflectors: Glass cylinder (tube) reflectors Hydrofarm reflectors Hydrotek reflectors Sunlight Supply reflectors HID reflectors with built-in ballasts

Atmospheric / Climate Controls

CO2 Injection and Testers

Light Movers & Reflective Sheeting
Misters & Measurers

Pest & Disease Control
pH, EC/TDS, PPM Controllers, Monitors & Testers
Plant pots and containers
Pumps and Plumbing
Reservoirs and Trays
Timers and HID Controls

All Hydroponics Systems

Combo Hydroponics / Grow Light Packages
Deep Water Culture (passive) Hydroponics
Drip (Top-Feed) Hydroponics Systems
Ebb & Flow Hydroponics Systems
Grow Tents (closet hydroponics)

Pumps, Plumbing and Parts
Reservoirs and Plant Trays
Rotating Hydroponics Systems
Tutorial - Hydroponics
Vertical Hydroponics Gardens

Nutrients and Fertilizers:

Cloning Nutrients / Solutions

Bonsai Tools & Supplies:

Digging and Root Tools

Misters and Measurers
Nutrients and Fertilizers
Potting Tools and Growing Mediums
Shears and Trimmers

Wire, Wire Cutters and Pliers
Questions and Answers (FAQ):
Bat Guano Fertilizers
Can-Fan / Can-Filter Setup

General Questions & Answers
Grow Seedling in Ebb & Flow
Growing Vegetables Indoors
Growroom Odor Control
Heat Control in Growroom
LED Growlight Facts
Root Rot and Hydroponic Systems

Winter Survival for Houseplants

Feeding Charts / Application Rates

Sale Items with special pricing
Track Your Order

Call or email us for quantity discounts!

FREE SHIPPING on orders totaling $250 or more
when delivered within lower continental USA!!!

Bonsai Tools Books / Reference Material Cloning Grow Room Healthy Lifestyles Hydroponics
Lighting (Grow Lights / Replacement Bulbs) Nutrients and Fertilizers Home
Customer Comments Product List Search Website Shipping Policies Track Order

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

Cuttings under a dome

How to Take Plant Cuttings

Seedlings in ebb & flow hydro

Transplant Seedlings into Ebb & Flow

The Basics (Tutorial)

Compact Fluorescents (CFL) Bulbs
HID Conversion Bulbs

High Pressure Sodium (HPS) Bulbs
Hybrid (combined MH & HPS) Bulbs
Metal Halide (MH) Bulbs
Which Bulbs to use? (Reference)

Glass Cylinder Reflectors

Sunlight Supply Reflectors
Reflectors with Built-In Ballasts

All Build-A-Light packages

Hydrofarm Light Packages
NextGen Ballast Light Packages
Quantum Ballast Light Packages
Sunlight Supply Light Packages

Fluorescents: compact, tube, T5

Reflectors with built-in ballasts
Greenhouse HID Lights

HID Light Controllers

Pest / Disease Control
pH, EC, PPM, TDS...

ALL-IN-ONE Cloning Packages

Starter Plugs & Trays

Digging & Root Tools

Misters & Sprayers
Nutrients & Fertilizers
Potting & Mediums
Shears & Trimmers
(Bonsai) Tool Kits
Wire, Cutters & Pliers