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Connect all negative terminals of leds with each other like shown in the image and connect the resistor also.
Connect the negative end of the battery with the resistor.
Connect a wire with the possitive end of the battery connector and leave the wire touching in the bottom of the tank so that the circuit will become c...
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or.... you only consider the light indicator panel....
or... you're hopping to get full voltage/current through the water to lit the led's?
I think you should explain a little better what is your purpose! Just to clarify please!
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