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6-in-1 Quicktest.

Check 6 water values with our
Professional quicktest.

The Quicktest 6-in-1 Test strips give you a quick and easy indication of pH, KH, GH, Nitrite, Nitrate and Chlorine parameters. 1 package includes 50 test strips.

Test values quick & easy
with reliable measurement results.


1 package includes
50 test strips.

Colombo 6-in-one Quicktest.

With the Colombo Quicktest important values can be tested quickly and easily.
Do a regular water test to ensure the water is clean and healthy for your fish.

6-in-1 Quicktest

Quicktest test strips for freshwater, contains 50 test strips with which you can quickly and conveniently measure the 6 most important values of aquarium water.

The strip can be used to test the following water values:

  • pH – acidity
  • KH carbonate hardness
  • GH – total hardness
  • NO2 – nitrite
  • NO3 – nitrate
  • CL – chlorine

Easily test your water values in 1 minute. Suitable for aquarium and pond. You can test 50 x 6 values, a total of 300 test values! After opening the packaging, store in a dry place and have a limited shelf life.



The pH is a 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 acid; high pH means the water is alkaline. Large fluctuations in the pH are harmful for fish. This can have a very negative effect, especially when a filter is started.

Carbonate Hardness

The correct Carbonate Hardness (KH) is mandatory for clear 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.

General Hardness

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


Nitrite (NO2) is produced out of ammonia by the nitrifying bacteria in your aquarium or pond. As nitrite is highly toxic to all water life, it is vital that the nitrite level in the water is zero. The best way to harbor these bacteria is in a biological filter. A new ‘clean’ filter needs time to have a sufficient number of bacteria to grow inside it. You can give this a boost by adding the right type of bacteria from the start.


Nitrate (NO3) is the end product of the degradation of ammonia by nitrifying bacteria in your aquarium or pond. Nitrate is not toxic for fish and thus is no direct problem for the health of your fish like ammonia or nitrite are; high concentrations however can on the long run lead to algae problems. We therefore advise to keep nitrate levels under 50 mg/l.


Chlorine (chemically abbreviated as CL2)  is often used as a disinfectant in tap water but is toxic for fish. Hence, we advise to keep chlorine levels low (<0.8 mg/l). Use Colombo Aqua Start when making water changes to neutralise chlorine.

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