Hello,
I am working on a reeftank system, which should be mainly controlled by arduino.
By now I am using a system which is reading the waterlevel with two sensors:
a floating sensor which is activating an alarm when the waterlevel gets to high
a IR sensor which triggers a pump to fill up the tank with fresh water.
You can see a picture of both sensor by checking this link:
http://reefbuilders.com/files/2009/11/tunze-osmolator-3155-4.jpg
Do you know how the optical sensor is called or where to get these?
Many thanks in advance
Rufus