Sera GH Test Kit

Makes it easy to monitor the total hardness

For approx. 420°dGH.

GH is the general hardness of the water. Humans can notice difference in water GH when they drink from the tap compared to filtered water. Tap water can be hard, which essentially means it is full of dissolved minerals. Soft water is at the other end of the spectrum and is devoid of minerals.

Fish species do have preference to hard or soft water. Generally most species will be tolerable to a range of hardness as long as it doesn't approach extremely soft or hard values. GH can be very important when attempting to breed fish or replicating natural habitats. Generally as a rule of thumb, the higher the pH the higher the GH. You will find that most fish species either prefer acidic and soft waters or alkaline and harder water.

For creating soft water we recommend adding sera blackwater aquatan or filtering through sera super peat.

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