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3*1.5 LR44 Battery(Battery not included)1 * User Manual Measure dissolved oxygen in water and monitor the health of fish in the water 0.5-2.5mg/L: Severe hypoxia in fish, 2.5-4.5mg/L: Slight hypoxia in fish, 5.0-7.0mg/L: Fish can metabolize normally and move freely D0 : 0.00mg/L~...
Did you know stomach acid has the same amount of acid as battery acid here That is how your system works. It is call pH — It is Something like how a battery works but much better. pH Scale Not Stomach Acid and Battery Acid is the same I Eat Beets Daily I have beets at least onc...