I have a system set up that will automatically change the water on my fish tank. It works well and I am using wires in the water as electrodes and have them plugged into the analog ports on the arduino. It senses water fine but the problem is that the wires disintegrate and every metal i have tried …

Water level Sensor

Coding_Badly July 11, 2009, 7:46am 8

Would a light sensor work? Will water "break" a light beam?

I know lasers are used for tank guaging. Will an optical proximity sensor work in a similar fasion? Would something like this...

...detect the surface of the water?

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