ELECTROPRIME C1C4 DC800 Portable Air Pump Fishing Aerator Quiet

4.9 (174) · $ 8.50 · In stock

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Features: 1. It is very important to adjust the frequency of the machine. Correctly use the potentiometer in the appropriate position to make the relay emit a crisp sound without sinking, and the effect is the best. 2. Place both electrodes in the water. The two poles are separated by one to five meters (depending on the power of the machine), and continue to press the switch.