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Get quick and accurate results with Freshwater Spa Phosphate Test Strips, which provide quick and reliable read. In a convenient pack of 25, these hot tub salt water testing strips help you achieve the appropriate phosphate balance of your water. Phosphates are contributors to algae growth and can reduce the effectiveness of some automated chlorination systems. Maintain your hot tub water by regularly using Freshwater Spa Phosphate Test Strips.
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🇺🇸 Ship from USA · On Agora since 2026
$17.99