I have gained this test strip immediately when I started working with thanks to some buddies in the aquarium hobby. The test has indeed some measurement fields that unfortunately not all are very reliable. In our experience, you can rely on the test fields for Ph, Cl, NO2 and NO3 as rough values. Quasi to get a rough idea about the work of the biofilter. The test values to Gh and Kh I always get very high levels as a result and I already want to buy a reverse osmosis plant ... Fortunately, I have before but once again checked all values with more accurate drop tests. Lo and behold, Härtwerte are all in the green zone!
Conclusion: As a rough idea, you can use the test strips. But as soon as a value seems strange should definitely again a drop test carried out! Since the test strips have me a bit disappointed, and thereby also particularly hunting and newcomers can be easily messed up. That's why from me it only 2 stars!
