Water analysis and diagnosis via smartphone: easy and safe control of the water values in freshwater aquariums. For the measurement of: general hardness, carbonate hardness, pH value, nitrite, nitrate, chlorine and CO2 calculation. The new generation of water analysis: download ProScan app free of charge, insert test strip into aquarium water, position strip on colour chart for analysis, scan colour chart, values are determined. Fast diagnosis precise results: test value results are displayed as numbers and additionally evaluated (good/medium/poor). Additional recommendations for optimal values in freshwater aquariums and ponds. Compatible with iPhone and iPad: iOS 5.0 or higher, Android 4.0 or higher and a camera with autofocus needed. Contents: 1 pack ProScan Recharge with 24 water analysis strips