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add 2 drops for every 100 litres of aquarium water daily
electricity can be used
) Dimensions 86
Photometer/Colorimeter Light Source LED @ 525 nm Photometer/Colorimeter Light Detector silicon photocell Battery Type/Life (1) 1
Phosphate ULR Checker Marine - Hanna fish food add 2 drops for everyThe Hanna Phosphate Ultra Low Range (0. 00 to 0. 90 ppm) HI774 Checker bridges the gap between simple chemical test kits and professional instrumentation. VIDEO Chemical test kits have limited accuracy and resolution since they rely upon the human eye to discern differences in color. Professional instrumentation incorporates a light source such as an LED or tungsten lamp with a filter and a light sensing detector to precisely determine ion
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