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Water maintenance.

A healthy pond starts with
correct water values.

In a new pond, it takes some time for the biology to establish. We offer various products to correct and maintain your water values.

For a stable pond &
healthy fish.

Reduce incorrect values &
bring balance in your pond.

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 pond water. When the KH is too low the pH can fluctuate which is very harmful for the aquatic life.

Sufficient for:

  • 1.000 ML= 7.000 ltr + 4˚DH
  • 2.500 ML= 17.500 ltr +4˚DH
  • 5.000 ML= 35.000 ltr +4˚DH
  • 15.000 ML= 105.000 ltr +4˚DH

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 pond water; these minerals mainly consist of Calcium. These minerals are essential for the well being of your fish and plants.

Sufficient for:

  • 1.000 ML = 7.000 ltr + 4˚DH
  • 2.500 ML = 17.500 ltr +4˚DH
  • 5.000 ML = 35.000 ltr +4˚DH
  • 15.000 ML = 105.000 ltr +4˚DH


The natural solution for healthy and clear pond water! Bactoclear contains special natural clays and minerals, and a high dose of cleaning bacteria. The clay minerals act as a floating filter material and directly absorb organic pollutants and toxins in the pond. The added natural minerals are essential for fish and plants. The cleaning bacteria clean the pond.

Sufficient for:

  • 1.000 ML= 6 x 20.000 ltr
  • 2.500 ML= 6 x 50.000 ltr
  • 5.000 ML= 6 x 100.000 ltr

pH Min

The pH is mathematical reference for the amount of acids dissolved in pond water. The pH can have a value between 0 and 14. A low pH means the water is acid; high pH means the water is alkaline. Large fluctuations in the pH are harmful for fish. Especially when a filter has just started.

Sufficient for:

  • 1.000 ML = 5.000 ltr
  • 2.500 ML = 12.500 ltr

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