Put Tourmaline Mineral Balls directly inside the tank or filter. The minerals will be released slowly.
When the nutrients of the soil are losing or GH is low, Tourmaline Mineral Balls can be used to improve it.
Since the process is slow and continuous, so shrimps are able to adapt to it.
Moreover, it contains positive and negative poles which can deionize the water and make better water quality.
Quantity 3: Usage for 10-20 gallons