Welcome visitor you can login or create an account.
ADL is a leading provider of Distance Learning, Home Study & Online Courses
Hydroponics III 100 Hours Certificate Course


Horticulture Courses Online  Hydroponics Courses Online   Courses Online   Courses Online  Levels Courses Online 

Hydroponics III 100 Hours Certificate Course

Price: £325.00Course Code: BHT321 CLD
Contact us
Currency Converter
View As PDFEmail This

Learning Methods

* Select your Learning Materials:
otipPlease select your how you would like to receive the course materials:

* Pay in Full or Select your Interest Free Payment Plan:

Add to Wish List
Contact us
( sunjay Bhujun, 05/07/2014 ) Q: will I know how to manage different types of plants grown hydroponically such as strawberry peppers tomatoes and so on.
( 08/07/2014 ) A: Hello Sunjay, Yes, the course will cover this in some detail, but not necessarily offer a step by step guide on how to grow strawberries or peppers this way. It would equip you with the knowledge to do it yourself, however.
( smain Krodja, 18/09/2013 ) Q: is this course certificated and what level please. hydroponics 3
( 19/09/2013 ) A: Hello, Yes, on completion of the course you will receive a Certificate for Hydroponics III

Ask a question

Note: HTML is not translated!

Hydroponics III 100 Hours Certificate Course

Hydroponics III course online. Learn to manage hydroponic systems and equipment. This course has been developed to complement Hydroponics I and II; and is intended for people who already have some experience and understanding of hydroponics.


Learning Goals:  Hydroponics III BHT321
  • Describe different approaches to cultural operations in hydroponics and demonstrate awareness of the similarities and differences between organic and hydroponic produce and techniques.
  • Describe how to plan a hydroponic operation through site and crop selection, matching a system with a crop, materials, resources and services required, and site layout; for different specific crops
  • Discuss system design components such as pumps, NFT channels, grow beds, solution tanks, media, pipes and irrigation fittings in terms of size, type, and material options, for different systems and specific crops
  • Provide details of how to manage a hydroponic system in hot, humid conditions such as in tropical or subtropical areas or in summer in temperate areas, for different specific crops
  • Explain options for water management such as water sources, quality, testing, treatments, and use in recirculating and non-recirculating systems
  • Explain and recommend different types of nutrient formulations, and advanced methods of detecting toxicities and deficiencies for different specific crops
  • Recommend methods of controlling nutrient level concentrations through taking EC, pH and temperature measurements; and maintaining nutrient levels for different specific crops
  • Recommend awareness of natural and other methods of pest and disease control such as biological controls as part of IPM and nutrient and pH manipulation for different pests and diseases



Lesson StructureHydroponics III BHT321

There are eight lessons in this course as follows:

1  Options for Managing Plant Culture

  • Introduction
  • Hydroponic Crops Versus Organic Crops: Similarities between Hydroponic and Organic Approaches
  • The Feasibility of Organic Hydroponics
  • Organic Certification for Hydroponic Systems
  • How Organic Hydroponics Operarates
  • Organic Hydroponic Substrates and System
  • Organic Pest and Disease Control
  • Organic Hydroponic Problems
  • Hydroponic Food Health
  • Types of Hydroponic Systems
  • Solution Culture
  • Nutrient Film Technique (NFT) and Deep Flow Technique (DFT)
  • Pond, Raft, Float or Raceway Systems
  • Aeroponics
  • Aggregate or Media Culture
  • Deep Irrigation Systems
  • Sub Irrigation and Ebb and Flow Systems
  • Growing Substrates for Hydroponic Systems: Rockwool, Sawdust, Coconut Fibre (Coir), Perlite, Pumice and Scoria, Vermiculite, Sand and Gravel, Composted Bark, Other Substrates 
  • Historic, Hobby and Lesser Used Systems: Gericke Method, Bengal Method, Wick Method, Sand culture, Bucket and Gravity Feed, Hanging Basket Method

2  Planning a Hydroponic Operation

  • Introduction
  • Site Appraisal
  • Climate: Temperatures, Frost and Snow, Humidity, Light, Dust, Wind 
  • Water Supply
  • Other Resources
  • Site Preparation
  • Site Layout: Growing areas, Propagation Area, Service Buildings
  • Matching a System with a Crop
  • Types of Greenhouse Structures

3  System Design Components

  • ​​Introduction
  • Materials for NFT Systems
  • NFT Channel Size and Solution Volume
  • NFT Channel Slope
  • NFT Delivery and Drainage
  • Sizing Tanks and Nutrient Reservoirs
  • Materials for Substrate Systems: Concrete, Metal, Timber, Plastic
  • Irrigation Design: Pumps and Pipes
  • Specific Materials for Use with Aggregate Systems: Sand
  • Gravel Aggregates
  • Materials for Use with Rockwool
  • Materials for Use with Sawdust
  • Others: Aeroponics

4  Managing a Hydroponic System in Hot, Humid Conditions

  • Introduction
  • Water
  • Chilling
  • Humidity and Temperature
  • Pest Control
  • Types of Tropical Culture: Sand culture, ebb & flow system, Modified dynamic root floating (DRF) system (AKA Deep Flow Technique), Deep flow and chilling, Tropical lettuce production

5  Water Management

  • Introduction
  • Water Sources: Mains water, Rain water, Underground water, Surface water
  • Water Quality: Hard water, Water pH, Water EC, Sodium Chloride, Turbidity, Smell and colour, Iron content, Carbon dioxide
  • Water in Recirculating Systems
  • Water in Run-to-Waste Systems
  • Water Treatments
  • Obtaining a Water Analysis for Hydroponics

6  Nutrient Formulation

  • Introduction
  • Fertiliser Salts for Formulations
  • Nutrient Formulations
  • Nutrient Formulation Stock Solutions
  • Nutrient Formulation: Formulas for different systems, Stage of growth - grow vs bloom formulas
  • Making up Hydroponic Stock Solutions from Fertiliser Salts
  • Nutrient Deficiencies & Toxicities: Nutrient mobility and deficiencies, Table: Observablw plant symptoms in response to nutrient imbalances, Other modes of detection, Nutrient toxicities

7  Controlling Nutrient Levels

  • Introduction
  • Nutrients & pH
  • EC (CF) & Nutrient Solution Levels: EC and TDS meters
  • Maintaining Nutrient Levels
  • Nutrient Temperatures

8  Pest & Disease Control

  • Introduction
  • Pest & Disease Control Measures: Integrated pest management (IPM), Nutrient solution management
  • Common Pests & Diseases
  • Pests: Aphids, Thrips, Whitefly, Caterpillars, Leaf Miners, Mites, Mealy Bugs, Scale Insects, Leafhoppers, Slugs and Snails, Flies, Other pests
  • Common Diseases: Botrytis - Grey mould, Mildew diseases, Rusts, Rots, Bacterial diseases, Viruses, Nematodes

Each lesson culminates in an assignment which is submitted to the Academy, marked by the Academy's tutors and returned to you with any relevant suggestions, comments, and if necessary, extra reading.


Practicals: Hydroponics BHT321

    Learn about the following:

  • Hydroponics versus Organic Crops
  • Feasibility of Organic Hydroponics
  • Hydroponic Food Health
  • Types of Hydroponic Culture -Water, Sand, Aggregate, Rockwool, Sawdust, Other
  • Planning a Hydroponic System
  • Site Appraisal
  • Climate -temperature, frost, snow, humidity, light, dust, wind
  • Water Supply
  • Other Resources
  • Site Preparation
  • Site Layout
  • Matching a System with a Crop
  • Grow Bed and Tank Construction
  • Pumps and Pipes
  • Materials for Different Types of Culture based Systems
  • Materials for use with Sand Culture
  • Materials for Use with Aggregate Culture
  • Materials for Use with Rockwool Culture
  • Materials for Use with Sawdust Culture
  • Materials for Use with NFT
  • Aeroponics
  • Water
  • Chilling
  • Humidity and Temperature
  • Pest Control
  • Types of Tropical Culture
  • Sand Culture in Hot Humid Places
  • Ebb and Flow Systems
  • Modified Dynamic Root Floating (DRF) System
  • Deep Flow and Chilling
  • Water Sources -mains water, rain, underground, surface
  • Water Quality
  • Hard Water
  • Water pH
  • Water EC
  • Sodium Chloride
  • Turbidity
  • Smell and Colour
  • Iron Content
  • Carbon Dioxide
  • Water Recirculating Systems
  • Water Treatments
  • Compounds for Formulations
  • Dutch Classification of Nutrient Formula
  • Nutrient Formula
  • Nutrient Deficiencies and Toxicities
  • Nutrient Mobility
  • Detecting Nutrient Deficiencies
  • Toxicities
  • Nutrients and pH
  • EC and Nutrient Solution Levels
  • Maintaining Nutrient Levels
  • Nutrient Temperatures
  • Integrated Pest Management
  • Common Pests and Diseases


The quality of this course is second to none, from the in-depth learning you will get to the expert individual mentoring you will receive throughout your studies. The mentors for this course are: 
Yellow rosesSusan Stephenson
BSc in Applied Plant Biology (Botany) Univ. London 1983.
City and guilds: Garden Centre Management, Management and Interior Decor (1984)
Management qualifications in training with retail store. Diploma in Hort level 2 (RHS General) Distinction. 
Susan Stephenson is a passionate and experienced horticulturist and garden designer. She has authored three books, lectures at 2 Further and Higher Education Colleges, teaching people of all ages and backgrounds about the wonders of plants and garden design, and tutors many students by correspondence from all over the world.
Susan studied botany at Royal Holloway College (Univ of London) and worked in the trading industry before returning to her first love plants and garden design. She is therefore, well placed to combine business knowledge with horticulture and design skills. Her experience is wide and varied and she has designed gardens for families and individuals. Susan is a mentor for garden designers who are just starting out, offering her support and advice and she also writes, delivers and assesses courses for colleges, introducing and encouraging people into horticulture and garden design.
In 2010, Susan authored a complete module for a Foundation degree (FDSC) in Arboriculture.
Susan holds the RHS General with Distinction. She continues to actively learn about horticulture and plants and (as her students will tell you) remains passionate and interested in design and horticulture.
Steven WhitakerSteven Whitaker
Diploma in Garden Design (Distinction) – The Blackford Centre, Gold Certificate of Achievement in Horticulture, Level 2 NVQ in Amenity Horticulture, Level 1 NOCN Introduction to Gardening, – Joseph Priestly College, BTEC Diploma in Hotel, Catering and Institutional Operations (Merit), Trainer Skills 1, & 2, Group trainer, Interview and Selection Skills – Kirby College of Further Education
Steven has a wealth of Horticultural knowledge, having ran his own Design and Build service, Landscaping company, and been a Head Gardener. His awards include five Gold awards at Leeds in Bloom, two Gold awards at Yorkshire in Bloom and The Yorkshire Rose Award for Permanent Landscaping. Steven has worked with TV’s Phil Spencer as his garden advisor on the Channel 4 TV Programme, “Secret Agent”. 
He is qualified to Level 2 NVQ in Amenity Horticulture and has a Diploma in Garden Design which he passed with Distinction. Steven’s Tutor and Mentor was the Chelsea Flower Show Gold Award-winning Garden Designer, Tracy Foster. He also works for a major Horticultural Commercial Grower in the field of Propagation and Craft Gardening. Steven lives in Leeds where he is a Freelance Garden Designer and Garden Advice Consultant. 


Excerpt From The Course


Temperate climate crops cannot tolerate high humidity levels and temperatures, so in order to grow them outdoors in tropical and subtropical regions it is necessary to seek out areas where humidity and temperatures are lower. Usually, this means choosing sites in mountainous regions. Even in these areas, the daytime and night time temperatures are likely to be at the optimum level for temperate climate plants.

During a heatwave, or a long spell above the usual temperatures, plants may die and whole crops fail. The higher the altitude, the less the risk that crops will fail due to fluctuations in temperature.

However, higher altitude can often mean steeper sites. Such steep locations are less favourable for traditional agriculture methods since there is a greater degree of soil erosion and the fertility of the soil is quickly depleted with successive cultivations. Also, soils may have high salt levels. In addition, these sites are not easy to navigate with machinery and so generally require more labour than flat sites.  

In these environments, hydroponics may be a better choice. Certainly, if the soil is infertile there may be no other option. Steep sites can be terraced if necessary to enable the establishment of equipment and grow beds. However, it may prove problematic finding enough skilled staff to work in such a venture. It may also be necessary to store spare parts, nutrients, and equipment on site since deliveries may be slower. In developing countries this may be a necessity since most parts might have to be imported. 

Another option in hot, humid environments is to grow seedlings in hydroponic propagation systems, such as in cubes of coir, and then plant them out into open fields of soil. This way, they have a greater chance of survival since in soil culture many seeds are killed by soil-borne disease before they have a chance to germinate. Nevertheless, this would still prove unviable in areas of extreme heat and humidity. 

In temperate climates, hydroponic growers have used other methods to reduce the chance of plants bolting from long days of hot temperatures. These include planting crops in wide rows with dense plantings to keep the root systems cooler. However, less ventilation between the plants can lead to increased humidity and the spread of fungal diseases. Perhaps a better solution is to plant the crops later so that there is less risk of a cold snap followed by hot weather which may stimulate bolting of plants.

In tropical and subtropical climates, evaporative cooling techniques can be used within greenhouse environments to reduce excessive temperatures making it possible to grow temperate climate crops. For example, misting will reduce temperatures - but again, moisture on leaves can trigger fungal infestations or sun scorch.  Another method, the fan-and-pad technique involves pumping water via pipes over porous pads from one end of the greenhouse and exhaust fans at the opposite end.


Course Info
How Do Our Tuition Fees Compare?
Course StartBegin your course at anytime.
Course Prerequisite None - Our course levels are an indication of the depth of learning you should receive. They do not describe the level of difficulty.
Course Qualification (Study Option A)Endorsed Qualification from TQUK - Training Qualifications UK, an Ofqual Approved Awarding Organisation - Completed written assignments, plus final exam (N.B. Some courses have Final Project alternative).
Course Qualification (Study Option B)Certificate of Attainment from ADL - Completed written assignments only - no final exam.
Comparative Credits InformationUK Course Credits: 10 - U.S. Credit Hours: 3 - when compared to regulated courses.
Course Duration and Deadlines100 hours approx. Course hours given are a guide only. Work at your own pace with no assignment deadlines or completion date. You are in control!
Study SupportPersonal tutor/mentor support from industry relevant professionals throughout your whole course. Mentors are contactable by e-mail, telephone and through the online classroom. They provide assistance with your course material, plus discuss, explain and give advice when needed.
Suitability for Self Employment and Small BusinessesOur courses are ideal for sole traders and small business owners and their staff. Customer confidence in what you can do will determine how successful you are in getting clients. Completing one or more of our courses for the service you have to offer, will give you the tools to grow your business.
Recognition of Your Course By EmployersWe aim to achieve the correct balance between your qualification being recognised and providing you with the in-depth learning, to empower you to succeed. Select study option A when enrolling, so an employer can check the status of the awarding organisation for your qualification on the Ofqual Register.
Recognition of Your Course By UniversitiesPrevious students have used their qualification to get into university. However each one will have its own entrance criteria and acceptance may also depend on your other qualifications and experience.
Designing Your Own QualificationBundle up your choice of related courses to form your own qualification. Choose from a Diploma (6 courses), Advanced Diploma (8 courses) and Higher Advanced Diploma (12 courses.
How Can I Enrol?Online via eCommerce, by completing our Online Application Form, or by calling us on +44 (0) 1227 789 649. Lines open 9am till 5pm Monday to Friday, excluding Bank Holidays and between Christmas and New Year.
How Can I Get a Pro-forma Invoice for my Employer?Contact us with details and we will email your employer an invoice. We will need: employer's name, address, telephone number, email address and contact name. We will also require your name, telephone number, email address, date of birth and the course and code you wish to enrol for.

                       Learn, Progress, Change, Achieve                                                     


Previous Customer Experiences with our CoursesWoman leaping to the next level in her career development

"Fantastic Teacher. Well organised modules. Assignments force me to learn and research more so I can prepare well for exams. I really enjoyed studying via ADL.  I can now continue study at Ulster University which accept my certificate from ADL".    Level 4,  Advanced Certificate in Applied Science,  VSC001,  Stanislawa,  Poland.

Its with great pleasure I am announcing you my new job as 'Park Manager' for a 5 star hotel in Reunion Island.  Its definitely my courses with ADL (Botany, Agronomy and Trees for Rehabilitation) which were decisive for my nomination. Accordingly, my sincere thanks goes to all the ADL team.

"The course was a valuable learning experience as it provided me with the knowledge and understanding for me as a Careers Advisor. The feedback was very good from my tutor, and allowed me to  build upon my assignments that were marked. The comments were very informative  and very useful. Well written course material."  Andrew W, Careers  Counselling, UK

More Reviews....


Contact Us
First Name:

Email Address:

Phone Number:


Get an Information Pack

Other (write below)

Disclaimer: Every attempt is made to ensure all information from the academy is accurate and that the student has attained the competencies taught in a course, at the point of their assessment. Beyond this point, the graduate is responsible to maintain their acquired competencies, and apply acquired knowledge and skills in a way which is appropriate to the unique characteristics of each application. This will release the academy from any liability, action and claims of whatsoever nature in connection with, or arising from any such information, instruction or advice, given by any student or ex-student, whether directions given during the course are followed or not.