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100% Natural Douglas fir bark
Convenient 3-pack format
Echinodorus tenellus
rimless design with state of the art technology
API GH/KH Test Kit GH 100% Natural Douglas fir barkWhen keeping freshwater fish and plants, the general hardness (GH) and carbonate hardness (KH) of aquarium water should match their natural habitat. The API GH & KH TEST KIT helps you duplicate the natural habitat of your fish to prevent stress, keeping them healthy! Sizes Contains 2 test bottles, easy to ready instructions, and glass test tubes
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