LED Water Level Indicator with BC337

Simple circuit that can indicate the water level (Or any other conducting liquid) in a tank.. The circuit is made by three BC337 transistors, three LEDs and three 330 ohm 1/4 watt resistors.. The water makes conductor between the positive wire and the transistor bases, which are sent in conduction and turn on the Leds. For this video I used tap water. * In the video instead of using the electrodes I just stripped the wires.. But I recommend using stainless steel electrodes to prevent oxidation of them by the electrolysis phenomenon. You can find the electric diagram in the end of the video.. Please comment and share this video:)