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  • COMMAIK
    • Contact Form
    • Imprint
    • Privacy Policy
  • The Villa
    • The top floor
    • The upper floor
    • The first floor
    • The cellar
    • The garden
  • Stories from the construction
    • irrigation
    • Photovoltaics
    • Pool and terrace
    • SmartHome
    • The planning
    • The demolition
    • The installation
    • Machinery
    • Restoration and working techniques
    • This and that
  • Videos
    • Build & Renovate
    • Irrigation
    • Carport
    • Gabions
    • Garden
    • Garden kitchen
    • Pool
    • Smart Home
    • Drying
    • Tutorials
  • TESTED & RATED
    • Heating solutions & energy
    • Outdoor & Garten
    • Pool & garden kitchen
    • Security & Smart Home
    • Tools & DIY
  • Commaik Music
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  • High Chlorine Consumption in the Pool: Why 20 Liters of Chlorine Disappeared in Two Weeks

    An almost empty swimming pool with some dirt on the bottom, a green hose, and a small pump. A staircase leads down to the pool, which is surrounded by light-colored tiles—factors that can affect chlorine usage when you’re preparing the pool for use. www.commaik.de

    Too much chlorine in the pool, a chlorine canister that’s constantly empty, or water parameters that don’t add up even though the water is clear: There are many possible causes for high chlorine consumption. In addition to sunlight, temperature, and swimming activity, the pH level, the chlorine products used, and cyanuric acid also play an important role. Even a good redox value does not automatically mean that the measured chlorine level in the pool is interpreted correctly. I noticed the problem after installing the BAYROL Automatic Cl-pH. In just under two weeks, the dosing system used about 20 liters of liquid chlorine—even though the water was clear and the system…

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    A worn, empty concrete pit with rusty beams, exposed pipes, and draining buckets—one orange and one green—sits against stained, aged walls in a dimly lit basement-like area. www.commaik.de

    Draining and waterproofing basements: Effective measures against moisture and flooding

    24. November 2024
    A gloved hand holds a white stick near a moldy wall. On the wooden floor, a silver packet labeled NOVUstick für nachträgliche Horizontalsperren contains 10 sticks for creating an effective horizontal barrier and improving drainage. www.commaik.de

    Drainage – retrofitting a horizontal barrier yourself

    24. January 2024
    A modern, automated litter box with a circular opening sits on a wooden floor next to a wooden pillar and light gray wall. The litter box is empty and clean. www.commaik.de

    Automatic litter box test: Self-cleaning litter box without odor – Mova LR10

    12. December 2025
  • Installing the BAYROL Automatic Cl-pH in the Pool and Retrofitting a Temperature Sensor: My Experience

    An automatic BAYROL pool control unit, along with piping, hoses, valves, and sensors, is mounted on an OSB wood wall; the system features a digital display and a state-of-the-art water analysis system. www.commaik.de

    Having crystal-clear pool water shouldn’t depend on whether I have the time or inclination to read test strips and adjust the water levels manually. That’s exactly why I upgraded my pool system with an automatic dosing system and installed the BAYROL Automatic Cl-pH. The system continuously measures the pH and redox values and can dispense chlorine and pH adjusters as needed. In a second step, I retrofitted a BAYROL temperature sensor. This allows me to check not only the water parameters but also the current water temperature via the display, the web portal, and the app. In this field report, I document the installation and commissioning of Automatic Cl-pH, explain…

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    A modern backyard with a rectangular pool, surrounded by gray tiles. There’s a covered terrace with bar stools, a small palm tree, and a blue shed in the background. www.commaik.de

    Build your own pool terrace with stone slabs on a slope

    8. June 2025
    An empty, bright blue swimming pool with a smooth pool liner, gray steps in one corner, and a circular drain on the wall. The outdoor pool is surrounded by unfinished ground and scattered greenery. www.commaik.de

    Laying, gluing and welding pool liners correctly

    10. February 2024
    A man stands beside images of a backyard with a pool. A Reolink Trackmix PoE security camera is shown on the left, with the Reolink logo at the top right and smart home icons above the garden scene. www.commaik.de

    Reolink TrackMix PoE – 4K dual lens surveillance camera review

    20. July 2024
  • Building a BPC and WPC terrace on a slope – My new pool terrace with recycled boards

    A backyard features a rectangular swimming pool surrounded by a wooden deck, a small covered terrace with a bar, a palm tree, garden beds, a lawn, a greenhouse, and a white house with stone siding. www.commaik.de

    BPC decking, slope, pool construction and substructure – in this post I show how I built my new pool deck with recycled BPC boards, solid larch beams and aluminum profiles. The pool is located on a slope, which places special demands on stability, gradient and load-bearing capacity. I share my experiences with BPC and WPC, explain the differences in installation and show what really matters when it comes to a durable, resilient decking construction. If you want to build a patio yourself, you’ll find lots of practical tips and insights here.

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    Various X-Sense smoke detector products, their packaging, mounting stickers, and a fire extinguisher are arranged on a wooden table with tools hanging on a pegboard in the background. www.commaik.de

    Network wireless smoke detectors across several floors: How X-Sense Link+ protects your whole house!

    21. July 2025
    Partially constructed garden kitchen with unfinished concrete block walls, a wooden roof, and a grill inside. The structure sits in a backyard, surrounded by trees visible in the background. www.commaik.de

    Build your own garden kitchen – solid half-timbered roof with OSB and welded sheeting for the outdoor kitchen

    22. March 2024
    A man stands beside images of a backyard with a pool. A Reolink Trackmix PoE security camera is shown on the left, with the Reolink logo at the top right and smart home icons above the garden scene. www.commaik.de

    Reolink TrackMix PoE – 4K dual lens surveillance camera review

    20. July 2024
  • Pool heating with ribbed pipe systems – Build your own solar heating for the pool

    Black pipes on a rooftop pool heating system in the foreground, with a backyard swimming pool, lawn, stone wall, blue shed, and covered seating area in the background on a sunny day. www.commaik.de

    Pool heating, solar absorber, Ripp pipe system and the efficient use of solar energy – in this article I document the complete conversion of my old EPDM pool heating system into a modern Dolphi-Ripp solar heating system. After more than ten years of practical experience with EPDM mats, I will show you why the change was necessary, which system is convincing today and how the new solar-based pool heating is proving itself in everyday life. Step by step, I describe the planning, installation and initial results – including technical details, comparisons and practical tips for installing a solar absorber on the roof.

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    A man thoughtfully poses in front of images of the Argus Eco Ultra cameras, a solar panel, and a backyard pool. The Reolink logo is at the top right, with "Argus Eco Ultra" displayed prominently in bold text. www.commaik.de

    Reolink Argus Eco Ultra review: 4K rechargeable surveillance camera without subscription

    17. February 2025
    A man points at a metal heating box containing machinery and a yellow fluid tank; a large white arrow indicates transferring liquid from a red fuel container into the parking heater. www.commaik.de

    Upgrading the diesel parking heater: Installing a tank extension for the mobile heating box

    19. January 2025
    A man points to security camera equipment, featuring a Reolink Altas PT Ultra camera, solar panel, and hub, with a backyard pool and patio area in the background. The Reolink logo is displayed on the left. www.commaik.de

    Reolink Altas PT Ultra: The powerful 4K battery-powered surveillance camera in a test

    13. October 2024
  • 6 steps to perfect pool water after the winter break

    A clear outdoor swimming pool with sparkling pool water reflects sunlight, surrounded by palm trees and neatly trimmed bushes on a bright, sunny day. The wooden pool deck features a depth marker reading 1.0 M. www.commaik.de

    After the winter break, the pool water is often cloudy and contaminated with deposits and algae. A few important steps are required to ensure that the pool is clean and inviting again in time for the swimming season. From thorough cleaning and topping up the water to optimally adjusting the water values – only with the right care will the water remain crystal clear and hygienic. I have tested various methods and products to quickly restore the pool water to an ideal condition after the winter break. In this article, I will show you the best solutions for effective pool maintenance and present tried-and-tested products that can be used to…

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    A person stands on a rooftop with solar panels and a balcony power plant, pointing toward a graphic showing a Zendure SuperBase energy storage unit. A modern house and trees are visible in the background. www.commaik.de

    Optimize balcony power plant – New modules and 220V battery storage for maximum efficiency

    26. July 2024
    A man points at a metal heating box containing machinery and a yellow fluid tank; a large white arrow indicates transferring liquid from a red fuel container into the parking heater. www.commaik.de

    Upgrading the diesel parking heater: Installing a tank extension for the mobile heating box

    19. January 2025
    Two robotic mowers, the TerraMow V600 and the V500, are sitting on the lawn; cameras are mounted on their sleek gray bodies and wheels. The word “TERRAMOW” is clearly visible on both of them. In the background, you can see a hedge and a building—the perfect setting for an outdoor test. www.commaik.de

    TerraMow V1000, V600, and Mini 500 Review: Robotic Lawn Mowers Without RTK and Lidar?

    20. August 2026
  • Laying pool edging stones and building your own pool terrace for the perfect pool surround

    A rectangular outdoor swimming pool with clear blue water is surrounded by gray tiled paving and pool edge stones. There is a small palm tree, green grass, and hedges in the background. Some tiling work appears unfinished on one side. www.commaik.de

    When building the pool, the correct laying of the pool edge stones and the construction of a beautiful and functional pool terrace played an important role. In this article, I describe how I selected the materials, prepared the substrate, cut and glued the stones. I also show how I laid the terrace loosely and built a platform as a transition to the garden terrace. Building a pool has been one of my biggest DIY projects. In this article, I would like to tell you about my experiences with laying pool edging stones and building the pool terrace.

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    An empty, bright blue swimming pool with a smooth pool liner, gray steps in one corner, and a circular drain on the wall. The outdoor pool is surrounded by unfinished ground and scattered greenery. www.commaik.de

    Laying, gluing and welding pool liners correctly

    10. February 2024
    3D floor plan of a rectangular room with grey walls, labeled dimensions, a curved front wall, built-in shelves on the left, and a person standing outside for scale. The approximately 6x4 meter room could easily fit a small indoor pool. www.commaik.de

    Plan your own pool and create a 3D floor plan

    25. May 2021
    Exposed wooden beams and metal pipes of a building under construction or renovation, with a partially demolished wall near the future terrace and scattered debris on the ground. Sunlight casts shadows across the scene. www.commaik.de

    Building a new pool – dismantling BPC decking and pool technology

    12. March 2021
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Autor & Blogger

In this construction diary, we share our experience in the renovation and modernization of our Art Nouveau villa and hope to give a few suggestions and tips to some of you.

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