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Details

All About the Product

Product description

Colombo GH Test – Precise total hardness test for koi & pond water

The Colombo GH Test is a precise drop test for determining the GH value (total hardness) in your pond water. A stable total hardness is crucial for the well-being of your koi and balanced water quality.

With this test, you can detect deviations early and take targeted measures for the stabilization and optimization of your pond environment.

One pack is sufficient for approx. 40 tests.

 

 

Who is the Colombo GH Test suitable for?

🐠 For koi and garden pond owners
🌱 For problems with unstable water values
💧 For regular monitoring of water hardness

 

⭐️ Benefits of the Colombo GH Test
  • Precision – Accurate measurement of total hardness
  • Control – Early detection of fluctuations
  • Simplicity – Easy-to-perform drop test
  • Stability – Supports constant water values
  • Yield – Approx. 40 tests per pack

 

    Technical specifications
    At a glance

    Drop test for determining general hardness (GH), sufficient for approx. 40 applications.

    Application and Dosage
    Application
    Apply regularly, especially when adding new stock or if water parameters change.
    Dosage
    Take a water sample from the pond using the included test tube. Add the test reagent drop by drop according to the enclosed instructions and shake the test tube after each drop. The number of drops required until the color of the solution changes corresponds to the GH value in °dH. The ideal GH value for most pond inhabitants is generally between 8 and 12 °dH. If the values are too low or too high, the water hardness should be adjusted using suitable products. Regular monitoring of the GH value ensures that the water quality remains stable and the pond inhabitants have a healthy environment.

    What buyers say

    What customers say about Koi-Area

    4,9 in the entire shop from 281 reviews
    Hand feeding koi by the pond edge

    Before you order

    Frequently Asked Questions

    When will it arrive?

    Ships from Germany, usually within 2 to 4 business days. Individual items are reproduced upon order – in that case, it takes about 10 to 14 business days. The estimated delivery date is shown at the top of the checkout area.

    How much is shipping?

    Within Germany €5.90 up to 30.9 kg, tiered above that. To Austria, Belgium, Luxembourg and the Netherlands from €7.50, to Denmark from €13.90 – each tiered by weight.

    Can I pick it up from you?

    Yes, free in Mönchengladbach, Tomphecke 25. Monday, Wednesday, and Friday from 10 am to 5 pm. Just add it to your cart and select pickup at checkout.

    I'm not sure if this is suitable for my pond.

    Then call us before you order: +49 152 27783926, Monday to Friday from 9 am to 3 pm. You’ll speak with someone who keeps koi and builds pond systems themselves. If a product isn’t right for your setup, we’ll tell you.

    Can I return it if it doesn't fit after all?

    The statutory 14-day right of withdrawal applies to equipment, accessories, and unopened goods. For hygiene reasons, we cannot accept returns of opened food and grooming products.

    How do I pay?

    PayPal, Klarna, Apple Pay, Shop Pay, credit card and the other payment methods you see at checkout. You can also pay in person when picking up your order.

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