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Keep your aquarium water in check with API 5 in 1 Test Strips (4 pack). Easily test for pH, Nitrite, Nitrate, Carbonate, and General Hardness. Simply dip the strip and get instant results! Available at ReptileSupply.com for all your aquatic needs.
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🇺🇸 Ship from USA · On Agora since 2026
$7.82