Natural Swimming Pool Training

Lesson 1 • What Is a Natural Pool

Defines natural pools by their biological filtration and plant-based purification. Provides the conceptual baseline for all subsequent design and construction topics.

Lesson 2 • Zone Layout and Pool Anatomy

Introduces the swim zone and regeneration zone as the two core spatial components. Students map functional relationships between zones to guide later sizing decisions.

Lesson 3 • Water Quality Fundamentals

Covers key water chemistry parameters: pH, dissolved oxygen, turbidity, and nutrients. Connects parameter targets to plant and microbial health outcomes.

Lesson 4 • Regulatory and Safety Overview

Surveys health and safety standards applicable to public and private natural pools. Students recognise compliance obligations before beginning any project.

Lesson 1 • Producing the Site Assessment Report

Integrates all site data into a structured report with recommendations and risk flags. Students practice a professional deliverable format used in real projects.

Lesson 2 • Soil and Substrate Evaluation

Covers soil permeability, clay content, and contamination screening methods. Soil data directly informs liner selection and substrate depth decisions.

Lesson 3 • Hydrological Site Analysis

Teaches groundwater depth, surface runoff patterns, and seasonal water table variation. Accurate hydrology data prevents liner failure and nutrient overload.

Lesson 4 • Spatial Constraints and Access

Identifies setback requirements, underground utilities, and equipment access routes. Spatial planning prevents costly redesigns during construction.

Lesson 1 • Swim Zone Sizing

Applies minimum area-per-bather ratios and depth profiles to define swim zone dimensions. Correct sizing ensures comfort, safety, and adequate dilution capacity.

Lesson 2 • Regeneration Zone Sizing

Calculates the plant bed area needed to process the nutrient load from the swim zone. Students apply uptake rate data for common aquatic plants to size beds accurately.

Lesson 3 • Hydraulic Retention Time

Defines hydraulic retention time and its role in biological treatment efficiency. Students calculate pump flow rates needed to achieve target retention times.

Lesson 4 • Volume and Water Balance

Calculates total pool volume, evaporation losses, and top-up water requirements. Water balance data informs infrastructure planning and ongoing operating costs.

Lesson 1 • Structural Edge and Coping Details

Designs pool edges for safety, aesthetics, and liner protection using coping and retaining elements. Edge details also manage surface runoff entry into the pool.

Lesson 2 • Substrate Profiles for Plant Zones

Specifies gravel, sand, and soil layer sequences that support rooted aquatic plants. Correct substrate depth and grain size optimise nutrient uptake and root anchorage.

Lesson 3 • Skimmer and Overflow Systems

Installs surface skimmers and overflow weirs to remove floating debris and control water level. These systems protect plant zones from organic overload.

Lesson 4 • Liner Material Selection

Compares EPDM, PVC, bentonite, and clay liners on durability, permeability, and ecology. Material choice affects long-term water retention and plant compatibility.

Lesson 1 • Aeration and Oxygenation Systems

Installs surface aerators or bottom diffusers to supplement dissolved oxygen in deep zones. Aeration prevents anaerobic conditions that degrade water quality.

Lesson 2 • Flow Control and Balancing

Uses valves, flow meters, and weirs to balance flow between zones and adjust seasonal rates. Proper balancing maintains target retention times year-round.

Lesson 3 • Hydraulic Flow Principles

Applies Bernoulli's principle, head loss, and pipe friction to natural pool circuits. Hydraulic fundamentals underpin every pump and pipe sizing decision.

Lesson 4 • Pump Selection and Sizing

Matches pump curves to system head and flow requirements for efficient operation. Students select energy-efficient pump models appropriate for low-velocity natural pools.

Lesson 1 • Plant Functional Groups

Categorises emergent, submerged, and floating plants by their filtration and oxygenation roles. Understanding functional groups guides species selection for each zone.

Lesson 2 • Planting Density and Layout

Calculates planting densities and arranges species to maximise filtration coverage. Spatial layout also prevents competitive exclusion among plant communities.

Lesson 3 • Establishment Phase Management

Manages the first growing season when plants are vulnerable and water quality is unstable. Students apply temporary nutrient controls and monitoring schedules.

Lesson 4 • Sourcing and Handling Plants

Covers certified nursery sourcing, quarantine protocols, and transport handling to prevent pest introduction. Proper sourcing protects pool ecology from day one.

Lesson 1 • Algae Identification and Control

Identifies filamentous, planktonic, and cyanobacterial algae by visual and microscopic methods. Students apply targeted, ecology-safe control strategies for each algae type.

Lesson 2 • Monitoring Program Design

Builds a sampling schedule covering frequency, locations, and parameters for routine monitoring. A structured program enables early detection of quality deterioration.

Lesson 3 • Laboratory Analysis Methods

Covers sample collection, preservation, and submission for nutrient and microbial analysis. Lab data validates field readings and detects parameters not measurable on-site.

Lesson 4 • Field Testing Techniques

Demonstrates in-situ measurement of pH, dissolved oxygen, temperature, and turbidity. Accurate field technique reduces false readings that trigger unnecessary interventions.

Lesson 1 • Long-Term Renovation Planning

Identifies substrate exhaustion, liner aging, and plant community decline as renovation triggers. Students build multi-year capital plans with cost and timeline estimates.

Lesson 2 • Summer Operational Management

Manages peak bather load, elevated temperatures, and accelerated plant growth in summer. Students apply intensified monitoring and harvesting schedules for this period.

Lesson 3 • Spring Startup Procedures

Covers inspection, equipment restart, and plant zone preparation after winter dormancy. Correct startup prevents early-season algae blooms and equipment failures.

Lesson 4 • Autumn Preparation and Leaf Management

Removes leaf litter, cuts back dying vegetation, and adjusts circulation before winter. Organic matter removal prevents nutrient loading during cold-season decomposition.