Oxygenator
"RichToyBox" writes:
I got one of the power inverters from WallyWorld and the
largest automotive battery, power wise that I could find. I already owned a
battery charger, so now my air pump runs from the inverter, which is
connected to the automotive battery, which is on constant charge. If the
power goes out, my air pump will run about 18 hours
Excellent DIY engineering!
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