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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 smart irrigation controller displaying “Hydrawise” is shown with an arrow pointing to a sprinkler watering a lush green lawn in the backyard. www.commaik.de

    Installing and programming the Hunter Hydrawise irrigation computer – step by step

    24. August 2025
    A hardy palm tree planted in a gravel bed stands in the foreground of a backyard with a blue swimming pool, blue shed, patio cover, and outdoor furniture in the background. www.commaik.de

    Hardy palms for the garden – these 5 species can withstand frost down to -15 °C

    30. March 2025
    A patch of grass with a hole dug in the soil, exposing underground cables for a robot lawn mower. Nearby are an orange cable locator tool, wires, a white hose, and two blue wire connectors. www.commaik.de

    Robot lawn mower – Find and repair a broken control cable easily

    19. January 2024
  • TerraMow V1000, V600, and Mini 500 Review: Robotic Lawn Mowers Without RTK and Lidar?

    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

    A robotic lawn mower without RTK, LiDAR, or a boundary wire is supposed to map the yard on its own and still navigate reliably. This is exactly where the TerraMow Mini 500, TerraMow V600, and TerraMow V1000 come in, with their camera-based TerraVision 2.0 technology. I’ve tested the Mini 500 and V600 extensively and am comparing them to the larger V1000. This article highlights the differences in navigation, obstacle detection, the app, coverage area, and edge cutting—and explains which model is the best choice for which type of garden.

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    Close-up of a partially constructed wooden deck, ideal for a garden terrace renovation, with a drill, screws, hammer, and metal brackets on top of the decking boards; metal framing and groundwork visible underneath. www.commaik.de

    Renovating the garden terrace: switching from wood to WPC and aluminum profiles

    17. March 2024
    A hardy palm tree planted in a gravel bed stands in the foreground of a backyard with a blue swimming pool, blue shed, patio cover, and outdoor furniture in the background. www.commaik.de

    Hardy palms for the garden – these 5 species can withstand frost down to -15 °C

    30. March 2025
    A metal heating box with hoses attached sits open next to a building, revealing machinery and a plastic container inside; the box appears to be an outdoor equipment unit or possibly a parking heater. www.commaik.de

    Installing a mobile diesel parking heater in the garden shed

    15. January 2025
  • ECOVACS GOAT O1200 LiDAR PRO Review: Perfect Edge Mowing Without Any Touch-Ups?

    An Ecovacs Goat robotic lawn mower with a black-and-white body stands in the sunlight on a green lawn; it has a red button and a front brush. www.commaik.de

    Lawn edges are among the biggest weak spots for many robotic mowers. The open lawn area is mowed neatly, but a narrow strip often remains unmowed along walls, hedges, or barriers that the mower cannot cross. That’s exactly where the ECOVACS GOAT O1200 LiDAR PRO comes in, with its side-extending TruEdge Trimmer. I tested the robotic lawn mower on three separate lawns, evaluating features such as automatic mapping, navigation, app control, the mowing pattern, and edge cutting. I was particularly interested in whether the built-in trimmer could actually reduce the need for regular touch-ups with a handheld trimmer. The first impression in the ECOVACS GOAT O1200 LiDAR PRO review was…

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    Open trench in a paved area with exposed cables, pipes, and a water pipe in the garden, surrounded by loose soil, bricks, and paving stones—signs of ongoing underground utility or lawn irrigation work. www.commaik.de

    Laying the water pipe in the garden: tips for connecting the water supply to the garden irrigation system

    10. March 2025
    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

    Laying pool edging stones and building your own pool terrace for the perfect pool surround

    8. December 2024
    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

    6 steps to perfect pool water after the winter break

    14. February 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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    Two cats stand near a MOVA Z60 Ultra roller robot vacuum, its charging station, and the MOVA Z60 product box, all placed on a wooden floor. www.commaik.de

    MOVA Z60 Ultra Roller Complete test: Fully automatic cleaning with AI and hot water

    15. October 2025
    A patch of grass with a hole dug in the soil, exposing underground cables for a robot lawn mower. Nearby are an orange cable locator tool, wires, a white hose, and two blue wire connectors. www.commaik.de

    Robot lawn mower – Find and repair a broken control cable easily

    19. January 2024
    A heating box containing technical equipment, including a white plastic tank with a blue cap, wiring, and black components, is open on a stand in a workshop with wooden walls. www.commaik.de

    Build your own mobile heating box: The best DIY solution with an 8kW diesel parking heater

    6. January 2025
  • Installing Air Conditioning Yourself in an Older Building – Heating and Cooling in Practice

    An air conditioner is mounted on the exterior wall of a light-colored building, with a vertical pipe running alongside it. In the background, nearby houses and trees can be seen against a partly cloudy sky. www.commaik.de

    Installing a split-system air conditioner yourself in an older building—does that really work? It was precisely this question that I explored in an Art Nouveau villa dating from 1900. In this field report, I document the entire installation process for a split-system air conditioner, explain the technology behind the air-to-air heat pump, and demonstrate why modern air conditioners today—

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    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

    6 steps to perfect pool water after the winter break

    14. February 2025
    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 red and black portable parking heater is displayed on a table with its components, including hoses, wires, a remote, clamps, a silver exhaust pipe, a vent, and a small black bottle in a wooden workshop setting. www.commaik.de

    Diesel parking heater for animal house, workshop and camper: My test of the Vevor 8kW heater

    3. January 2025
  • Robot lawn mower without boundary wire in test: LiDAR vs RTK in comparison (ANTHBOT M5 vs M9)

    Two Anthbot robotic lawnmowers stand side by side on green grass, the sunlight illuminating their wheels and sensors in a backyard or garden. www.commaik.de

    Robot mowers without boundary wires are currently one of the most exciting developments in the gardening sector. In my test, I directly compared two different concepts: the ANTHBOT M5 as a LiDAR robotic lawnmower and the ANTHBOT M9 as an RTK robotic lawnmower with GPS navigation. Both models manage completely without a perimeter wire and show in the practical test how well cordless robotic lawn mowers really work today. In this comparison, I share my experiences from my own garden, discuss navigation, obstacle detection, edge cutting and set-up and clarify which robotic lawnmower without a wire is the best choice for which area of application.

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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
    A metal heating box with hoses attached sits open next to a building, revealing machinery and a plastic container inside; the box appears to be an outdoor equipment unit or possibly a parking heater. www.commaik.de

    Installing a mobile diesel parking heater in the garden shed

    15. January 2025
    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
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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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