The Seneye Reef USB Solution is set to revolutionise the way you test and monitor your marine aquarium. The unit automatically monitors multiple key parameters, providing 5600 readings per month to give you the peace of mind you need when running a reef system. The system features an early warning, intelligent software which can predict future water conditions based on trends. The results of the monitoring can be accessed worldwide online for ease of use and further peace of mind when away from home. You can even access your parameters using your iPhone, iPad or android device!! These features require the unit to be plugged into an internet enabled PC (2m cable supplied) but the unit can also function independently with the USB power adaptor (sold separately). Lights on the unit indicate the current parameters. A wireless USB sender is also available. To monitor the PH and ammonia the unit uses a slide which needs to be replaced on a monthly basis. Seneye Reef Solution monitors: Free ammonia (NH3) PH Light monitoring Temperature Water level monitor LUX (lx) Photosynthetic active radiation (PAR) Kelvin (k)