




water care
Colombo KH+ for koi & garden ponds
Stabilize carbonate hardness
- Erhöht zuverlässig die Karbonathärte im Teichwasser
- Stabilisiert den pH-Wert und verhindert Schwankungen
- Unterstützt ein gesundes Teichmilieu
- Wichtige Mineralstoffbasis für Fische und Pflanzen
Wird für dich bestellt · Lieferzeit ca. 10–14 Werktage

Colombo KH+ for koi & garden ponds – stabilize carbonate hardness
Details
All About the Product
Product description
Colombo KH+ for Koi & Garden Ponds – Stabilize Carbonate Hardness
Colombo KH+ effectively increases the carbonate hardness (KH) in pond water and ensures stable water values in koi and garden ponds.
Carbonate hardness acts as a natural buffer and stabilizes the pH level in the water. If the KH is too low, the pH level can fluctuate rapidly. Such fluctuations stress fish, plants, and filter bacteria, and can disrupt the biological balance in the pond.
With Colombo KH+, the carbonate hardness in the pond is increased in a targeted manner. This keeps the pH level stable and ensures that the water provides better living conditions for koi, pond fish, and aquatic plants.
Who is it suitable for?
🐠 Koi keepers with excessively low carbonate hardness in the pond
💦 Pond owners with unstable water values
⚖️ To stabilize the pH level in the garden pond
Benefits at a glance
- Reliably increases the carbonate hardness in pond water
- Stabilizes the pH level and prevents fluctuations
- Supports a healthy pond environment
- Important mineral base for fish and plants
- Ideal for koi and garden ponds
Dosage
10 ml of Colombo KH+ per 1,000 liters of pond water increases the KH value by 1 °dH.
The dosage depends on the initial hardness and the desired KH value. Test the water after application and adjust the amount if necessary.
A KH value of 6–10 °dH generally ensures stable water values in koi and garden ponds.
Available variants
⭐️ 1 L
⭐️ 2.5 L
⭐️ 5 L
⭐️ 15 L
Technical specifications
At a glance
Application and Dosage
Application
Dosage
What buyers say
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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.

