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Not to be outdone by the ballast
so that carbon dioxide is released according to how much CO2 is actually required
microbial and mineral extracts
Timer systems can be difficult to 'dial' into the ideal moisture levels
HM EC/TDS Hydrotester COM-80 230V Not to be outdone byThe com 80 is an economically priced, reliable ec tds meter that is ideal for testing applications such as hydroponics & gardening, pools & spas, aquariums & reef tanks, water ionizers, drinking water and more. Measures electrical conductivity (ec),total dissolved solids (tds). Excellent for nutrient testing. Four scales: ec: s, ms; tds: ppm, ppt. This tester has automatic temperature compensation (atc) and is water resistant. Measurement range: 0
US$ 52.54
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US$ 15.99
