Brew12
Electrical Gru
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My Tank Thread
Very true, but as you know in this hobby we don't actually use DC pumps. All DC motors use carbon brushes to supply current to the rotor.If you are not already confused, DC like in DC pumps will not induce any electricity into your water.
The reason they are called DC pumps is because they take AC, convert it to DC, and then convert it back to a variable frequency AC that controls speed.
Even an MP-40 can induce quite a bit of voltage into a tank.