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and biological)
or potassium
2V 500mAh LiFeCoPO4 battery
Formulated with pure herbal extracts
this compact aquarium is perfect for creating a stunning underwater display in any room
HM Digital TDS-4 TDS Meter LED and biological)Accurate & Reliable Water Quality Testing The HM Digital TDS 4 TDS Meter is a compact, handheld device designed to measure Total Dissolved Solids (TDS) in water quickly and accurately. Ideal for hydroponics, aquariums, drinking water, water filtration systems, and more, this easy to use meter delivers fast digital readings to help you monitor water quality with confidence. Key Features Measures Total Dissolved Solids (TDS) in ppm (mg L) Measurement