Hidroponia

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How-To Hydroponics

4th edition

Keith Roberto

4

How-To Hydroponics

Foreword

The author of this information and its publishers disclaim any personal liability, loss or risks
incurred as a consequence of the use and application, either directly or indirectly, of any advice,
information or methods presented herein.
The right and license to all publications,images
and copy contained within are reserved. No part
of this publication may be reproduced, copied,
sold or presented to or for anyone other than the
purchasing agent granted specific license at time
of purchase. Contact author at address below for
licensing imagery, diagrams or textual content.

First edition published 1994
Second edition revised 1997
Third edition published 1999Fourth edition completely revised 2003
www.howtohydroponics.com

All text, images and illustrations
Copyright 1994-2003 Keith Roberto
keith@futuregarden.com
Cover design by Marissa Morris
ISBN - 0-9672026-1-2

Published by:
The Futuregarden Press
a division of Futuregarden, Inc.
97 Rome Street
Farmingdale, New York 11735
www.futuregarden.com
1.888.338.3305

How-To Hydroponics, thefourth edition, represents the largest
and most concise body of work I’ve accomplished on the subject
of hydroponics thus far. So much has changed as technology and
man’s understanding of the science has progressed over the years,
that I felt compelled to produce this new edition to keep my
readers up to date and to further inspire others to give hydroponics
a try. How-To Hydroponics has beenwritten in an easy to follow
style that combines a basic yet comprehensive background in the
science of hydroponics with the hands-on experience that makes
learning fun. Whether you grow for fun, food or profit, this
completely revised edition covers everything you’ll need to know
to develop a working knowledge of the technology.
You’ll learn, step-by-step, how to build and operate all thehydroponic and aeroponic systems detailed for construction in the
book. You’ll learn how to grow your favorite flowers, herbs and
veggies with this exciting technology that is revolutionizing the
agricultural industry. How-To Hydroponics Fourth Edition
encompasses over a decade of research and development in the
field of hydroponics. I have spared no expense to provide you
with all theknowledge you’ll need to get growing quickly and
successfully with hydroponics. Every effort has been made to
ensure that all the known questions and discrepancies from
previous editions have been answered and corrected in this
edition. Of course I’m only human, so if you find something I’ve
missed, please let me know! My email is included on this page.
For best results, I recommend that you readthis book in the
order it has been written so as not to miss any important info that
could sacrifice the quality of your results. Take the time to read
this book entirely before beginning any type of planning or
construction. The important information within will certainly
affect your decisions of what, where and how to grow, and it will
ultimately improve your chances for success.
BestRegards,
Keith Roberto

5

Contents
Foreword...4
Plants For Food & Pharmacy...6
You Are What You Eat...6
Hydroponics To The Rescue...7
It Starts With A Seed...8

What Is Hydroponics?...10
A Brief History Of Hydroponics...11
Current Research...13
What All Gardeners Can Learn From NASA...13
It’s All About The Roots...14

Hydroponic Mediums...16
Coconut Coir...17
Perlite...17...