
Explore hydroponics as a hobby-led, interdisciplinary field and learn to build, design, and grow with a living, collective knowledge approach suited to beginners and seasoned hobbyists.
Hydroponics is the process of growing plants in water using liquid nutrient solutions instead of soil. When done correctly, this approach enables precise control over environmental conditions, such as nutrient levels, lighting, temperature, and humidity, leading to enhanced growth, increased yields, and more efficient use of resources.
What's covered in this lesson:
1) What is Hydroponics
2) How Hydroponics Works
3) The Hydroponic Fundamentals
4) Passive vs Active Systems
5) Recovery vs Non-recovery (Recirculating vs Non-Recirculating) Systems
6) Hydroponics Advantages and Disadvantages
Oxygenation in hydroponics goes beyond merely bubbling air through water. It’s about creating an environment where plants can thrive with vigor and vitality. From the simplicity of the air gap method to the technological finesse of misting systems, each oxygenation technique offers unique benefits tailored to different hydroponic setups. So whether you’re here as a hobbyist growing fragrant herbs or a more ambitious gardener nurturing a crop of tomatoes, the importance of oxygen remains constant: it’s the lifeline that ensures your plants grow healthy and strong.
What we'll cover in this lesson:
1) Soil vs Hydroponics: How they both receive oxygen
2) Different Methods to Oxygenate Water in Hydroponics
Learn five water types for hydroponics: tap, rain, well, filtered, and distilled, and how availability and chlorine influence pH and plant health.
Maintain hydroponic reservoir temperature between 68 and 72°F to mimic soil and promote root health; indoors offers full control, while outdoors relies on seasonal strategies, greenhouses, and cooling methods.
Explore how hydroponics delivers nutrients to the root zone and differs from soil. Balance N, P, K with secondary and micronutrients using liquid or dry nutrients and feed charts.
Mix dry powder nutrients for a five-gallon hydroponic system using maxi grow. Measure 1–2 teaspoons per gallon and stir until dissolved.
Learn how the pH scale in hydroponics affects nutrient availability and absorption. Most crops thrive between 5.5 and 6.5, tested with kits and adjusted with pH up or down solutions.
Master electrical conductivity (EC) as a measure of nutrient concentration in hydroponics and why EC is preferred over PPM. Learn to read EC meters and adjust nutrients for plant-specific ranges.
Explore indoor hydroponic lighting essentials, compare LED and high-pressure sodium lights, set appropriate daily light hours, position lights by plant canopy, and choose full-spectrum options for reliable growth.
Explore hydroponic growing media that anchor plants and retain moisture with a near-neutral pH (5.5–6.5). Learn about coco coir and clay pebbles, plus perlite and grow sponges or seed pods.
Discover hands-on coco coir products for hydroponics, including expandable pellets, chips, fibers, and pith, with pre buffed options and tips on net cups and a wood skewer.
Learn how to germinate seeds in hydroponics, covering essential temperature, moisture, and depth guidelines, seed stages from inhibition and lag phase to root emergence, and practical start-and-transfer methods.
Explore using 2-inch and 3-inch net cups to anchor plants in hydroponics, choose growing media like clay pebbles or coco chips, and use foam collars to block light.
Choose food-safe, light-blocking reservoirs to prevent algae, using black and yellow totes or five-gallon buckets for small hobby setups. For larger systems, install a liner—HDPE keeps water contained.
Choose quarter inch clear vinyl tubing for air pumps and half inch poly distribution tubing for drip systems and emitters; test fittings at the store to ensure compatibility.
Explore submersible water pumps and timers for hydroponics, compare gallons-per-hour and head height to match your system, and choose digital or non-digital timers for reliable operation.
Compare hydroponics air pumps, including 15 l/min and 10 l/min models, for a small hobby reservoir, and learn about quarter-inch tubing, check valves, and pump placement.
Explore the mighty Kratky method, a patent by Doctor Bernhard Kratky for a passive, no-pump hydroponic system. Learn how water level, root growth, and the air gap support plants.
Explore the wick hydroponic system, a passive, beginner-friendly setup powered by capillary action that delivers nutrients without pumps, ideal for lettuce and herbs but limited for heavy water users.
Explore deep water culture, a simple, beginner-friendly hydroponic system with plants in net cups over a nutrient reservoir fed by air stones and an air gap.
Explore the nutrient film technique (NFT): a space-efficient, scalable hydroponic system using shallow nutrient films in channels, with horizontal and vertical designs, design tips, and maintenance considerations.
Master the ebb and flow flood and drain hydroponic system, with a media bed, pump, timer, grow tray, and overflow; explore design options, advantages and disadvantages, and setup tips.
Explore the hydroponic drip system, its components, advantages, and design options, including recirculating versus non-recirculating setups, pump sizing, and precise drip timing.
Learn aeroponics, a high-oxygen hydroponic method using a pump, timer, and misting nozzle to feed roots with a fine mist, enabling efficient growth and cloning with low- and high-pressure options.
Build a simple deep water culture system with an air pump, air stones, and coco coir pellets. Learn to assemble, maintain, and optimize water, pH, nutrients, and oxygenation for growth.
Learn to build a simple ebb and flow flood and drain hydroponic system using a pump, bulkhead fittings, standpipe drain, and coco chips or clay pebbles.
Build a floating raft hydroponics system—a deep water culture with a polystyrene top, HDPE liner, and PVC netting—recirculated by a small solar panel for root oxygenation.
Why This Course?
There's a lot of information out there on hydroponics, but it can be really intimidating and hard to sort through.
Not anymore!
This course is designed to work with you to create a fun, engaging, and straightforward way to learn the ins and outs of hydroponics. Designed for beginners and everyday hobbyists, this course will take you through each step of the hydroponic growing process, providing you the tools to build your own system with confidence. Start growing your green (hydro!) thumb today!
Course Includes
Structured Learning
3+ Hours of Content
Over 30 Lessons
12+ Hydroponic Articles (for additional guidance)
Pre-recorded lessons so you can watch on your own time and at your own pace
Helpful links for additional information
Ongoing support and instructor help
Beginner lessons on how to build every type of hydroponic system
Visual and Hands-On Lessons
A feeling of satisfaction and appreciation for the art and science of hydroponics
Hands On Learning
In Hydroponics 101, we believe the best way to learn is by doing. Lessons are packed with practical exercises and links that guide you through creating and managing your own hydroponic system. From assembling your setup to monitoring plant health, you'll gain valuable, hands-on experience that will help you become a confident hydroponics enthusiast.
Engaging Presentations
Our course features dynamic presentations that make learning about hydroponics exciting and accessible. We break down complex concepts into simple, easy-to-understand segments, enriched with visuals and real-life examples. You’ll stay engaged and inspired throughout the course, making your journey into hydroponics both informative and enjoyable.
How to Build Your Own
Hydroponics 101 takes you step-by-step through the process of building every type of hydroponic system from scratch. You’ll learn how to select the right components, set them up, and customize them to suit your growing needs. By the end of the course, you'll have the knowledge and skills to construct a thriving hydroponic system tailored to your space and goals.