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sera gH-Test
For easy determination of general hardness (gH)
General hardness (gH) measures the total concentration of minerals, especially calcium and magnesium, which are crucial for fish health and plant growth.
✅ Enough for: approx. 420°dGH
💡 Recommendations:
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Too low gH? → use sera mineral salt
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Too high gH? → mix in reverse osmosis water
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For soft water, use sera blackwater aquatan or filter with sera super peat
📦 Contents: 15 ml
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