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Kh increases in seawater aquarium (500 ml)
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When you have an optimal Kh between 8° and 12° DH, the pH will be stable with correct values.
Colombo Reef Start Marine KH+ increases safely carbonate hardness and at the same time the pH will remain stable between 8.0 and 8.4.
Sufficient for starting a 250 liter aquarium.
Dose 1 ml per 5 litres to increase the Kh with 2° DH.
Check regularly with Colombo Marine KH test.