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Water correction.

A healthy aquarium needs
correct water values.

In a new aquarium it takes times for the biology to establish. We offer several products to correct and maintain your water values.

For a stable aquarium
& healthy fish.

Reduce incorrect
values & restore balance.

Our maintenance products.

With these Colombo products you will correct and maintain your water values in no time!
Our products will make sure your water will stay healthy and stable.

KH Plus

The correct Carbonate Hardness (KH) is mandatory for clear pond water and healthy fish and plants as well as a stable pH. KH is a measurement for the total amount of dissolved carbonates in the water. When the KH is too low the pH can fluctuate which is very harmful for the aquatic life.

GH Plus

A correct General Hardness (GH) is essential for clear water. GH is a measurement for the total amount of dissolved minerals in the water; these minerals mainly consist of Calcium. These minerals are essential for the well being of your fish and plants.

pH Min

The pH is mathematical reference for the amount of acids dissolved in water. The pH can have a value between 0 and 14. A low pH means the water is acidic; high pH means the water is alkaline. Large fluctuations in the pH are harmful for fish.


Effective against all types of algae in freshwater aquariums. By reducing the nutrient absorption, algae can no longer grow and eventually die. Aquarium plants can absorb their nutrients through the aquarium bottom and are thus protected.

Goldfish Care

Specially designed for the optimum care of goldfish. Goldfish Care is a 100% natural salt, which is enriched with vitamins, minerals and nourishing ingredients. Goldfish Care creates a healthy environment for healthy goldfish. Goldfish Care hence prevents fish diseases.

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