• API General & Carbonate Hardness Test Kit Aquarium API
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API GH & KH Test Kit


$12.30
$12.30
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Estimated delivery
Ships same day when ordered by 11am EST
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Tests tap water & freshwater aquariums for general hardness (GH) and carbonate hardness (KH). Helps prevent fish stress caused by rapid pH shifts, the result of low levels of KH.