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The seneye device will periodically test if it is under water. The seneye device does this with the red LED that flashes on the back of the device. This optical method of testing allows the system to only take a measurement of temperature, pH and NH3 when it is actually in your aquarium or pond to validate the reading as correct.
Occasionally the in water test can get confused and this is usually confused by the following.
- Air trapped on the clear window on the back of the device
- Algae growing on the clear window on the back of the device (this can be cleaned with cotton wool)
- The seneye device being mounted directly to the back of the aquarium - in some circumstances the device can get confused by the lighting in you aquarium, the colour of you tank background and ambient light.
Mounting the seneye device with the back facing into your aquarium will generally give the best results.