In article ,
Harry Muscle wrote:
I think titanium will hold out longer in water. Also look into float
swit , hey are usually better for aquarium use. I'm assuming you
will be doing some kind of connectivity measurement to see if
electricity can flow between two rods, right? If it can, then water is
touching it. However, this would mean you would have electrical currents
in the water, which might affect your fish badly.

Might be easier to run an IR beam across the tank?

--
*I couldn't repair your brakes, so I made your horn louder *

Dave Plowman London SW
To e-mail, change noise into sound.