Hydroponics Course

Lesson 1 • Plant Biology Essentials for Growers

Covers root function, photosynthesis, and transpiration as they apply to hydroponic design. Understanding plant physiology drives every nutrient and environment decision.

Lesson 2 • Overview of Hydroponic System Types

Surveys the six major system categories and their core mechanics. Provides the decision framework expanded in later chapters.

Lesson 3 • What Hydroponics Is and Why It Matters

Defines hydroponics and contrasts it with soil-based agriculture. Sets the conceptual baseline for all subsequent system and nutrient decisions.

Lesson 4 • Water Quality and Its Role

Introduces pH, EC, and dissolved oxygen as the three critical water parameters. Establishes measurement habits that underpin every operational chapter.

Lesson 1 • Ebb and Flow Systems

Covers flood table design, timer programming, and drainage rates. Emphasises how flood frequency affects root zone moisture and oxygen balance.

Lesson 2 • Nutrient Film Technique Systems

Details channel slope, flow rate, and pump cycling for NFT. Students learn why thin film depth is critical to root oxygenation.

Lesson 3 • Choosing the Right System for Your Goals

Applies a structured decision matrix comparing cost, crop type, scale, and skill level. Students produce a justified system selection for their own grow scenario.

Lesson 4 • Drip and Aeroponics Systems

Examines emitter spacing, pressure requirements, and misting intervals for drip and aeroponic setups. Highlights precision demands and failure points.

Lesson 1 • Organic and Mineral Nutrient Options

Compares synthetic mineral salts with organic-approved inputs for hydroponic use. Students evaluate trade-offs in cost, consistency, and certification requirements.

Lesson 2 • EC Monitoring and Nutrient Strength

Explains how EC targets shift across growth stages and how to respond to plant uptake signals. Links EC management to yield optimisation.

Lesson 3 • pH Management in Practice

Covers pH adjustment techniques, buffering, and drift correction routines. Stable pH is the single largest factor in nutrient availability.

Lesson 4 • Macronutrients and Micronutrients

Identifies the 17 essential plant nutrients, their roles, and deficiency symptoms. Accurate diagnosis depends on this foundational nutrient knowledge.

Lesson 1 • Inorganic Media Options

Examines rockwool, clay pebbles, perlite, and vermiculite in detail. Students assess reusability, cost, and system compatibility for each option.

Lesson 2 • Organic and Hybrid Media Options

Covers coco coir, biochar, and peat-based mixes as organic alternatives. Highlights buffering needs and microbial activity differences versus inorganic media.

Lesson 3 • Root Zone Health and Monitoring

Teaches visual and physical root inspection, oxygen management, and early disease detection. Healthy roots are the leading indicator of overall plant health.

Lesson 4 • Properties of Hydroponic Growing Media

Defines porosity, water retention, cation exchange capacity, and pH neutrality as key media metrics. These properties determine root zone oxygen and moisture balance.

Lesson 1 • Light Placement and Coverage Design

Covers hanging height, reflector design, and canopy uniformity mapping. Proper placement eliminates hot spots and dark zones that reduce yield.

Lesson 2 • Light Fundamentals for Plant Growth

Explains PAR, PPFD, and DLI as the three metrics governing photosynthetic light delivery. Mastery of these metrics is prerequisite to fixture selection and placement.

Lesson 3 • Grow Light Technology Comparison

Compares fluorescent, HID, and LED technologies on efficiency, heat output, and spectrum. Students match fixture type to crop, budget, and space constraints.

Lesson 4 • Photoperiod Programming by Crop Stage

Defines photoperiod requirements for vegetative and flowering stages across crop types. Correct scheduling triggers developmental transitions and maximises biomass.

Lesson 1 • CO2 Enrichment Strategies

Covers ambient CO2 levels, enrichment methods, and the interaction with light intensity. CO2 enrichment only delivers ROI when light and temperature are already optimised.

Lesson 2 • Temperature Management for Plant Health

Defines optimal temperature ranges for root zone and canopy across growth stages. Temperature deviation is the fastest route to stress and yield loss.

Lesson 3 • Integrated Climate Monitoring Systems

Introduces sensor networks, data loggers, and automated controllers for climate management. Automation reduces labour and catches deviations before they cause crop damage.

Lesson 4 • Airflow and Ventilation Design

Explains horizontal airflow fans, exhaust systems, and air exchange rates for disease prevention. Adequate airflow strengthens stems and reduces pathogen pressure.

Lesson 1 • Integrated Pest Management Principles

Defines IPM tiers: prevention, monitoring, biological control, and chemical intervention. Students build a tiered response plan prioritising non-chemical methods.

Lesson 2 • Fungal and Bacterial Disease Management

Covers powdery mildew, botrytis, pythium, and bacterial root rot with causal conditions. Environmental control is the primary prevention tool for all four pathogens.

Lesson 3 • Sanitation and Facility Hygiene Protocols

Establishes cleaning schedules, disinfectant selection, and quarantine procedures for new plant material. Facility hygiene prevents introduction and spread of all major threats.

Lesson 4 • Common Hydroponic Pests Identification

Profiles spider mites, fungus gnats, aphids, thrips, and whiteflies with identification keys. Early and accurate ID is the foundation of effective IPM response.

Lesson 1 • Crop Selection and Variety Evaluation

Evaluates leafy greens, herbs, fruiting crops, and microgreens for hydroponic suitability. Variety choice determines system design, cycle length, and market positioning.

Lesson 2 • Production Scheduling and Crop Cycling

Teaches staggered planting, succession scheduling, and space utilisation planning. Continuous harvest flow requires precise timing across multiple crop cohorts.

Lesson 3 • Harvest Timing and Techniques

Defines maturity indicators for each crop category and correct harvest tool use. Harvesting at peak maturity maximises quality, shelf life, and customer satisfaction.

Lesson 4 • Training, Pruning, and Canopy Management

Covers topping, low-stress training, trellising, and leaf pruning for fruiting crops. Canopy management directly controls light penetration and yield per square foot.