I have a freshwater aquarium and the fish usually die after about 3-4 months. I tried what I could (change the water more often, change the temperature, etc.). I couldn't change the situation. After asking my "fishmonger" I found that the water I was adding wasn't always the right PH level. The best example is the picture I shared: 1) a clean strip 2) a strip from my aquarium. I need to change the water but I'm still sure 3) The tap water is not good and the fish will die. I feel like I now have the tools to provide my fish with the right water at a very good price. I love these strips and recommend them.
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