A key to maintaining a successful and healthy aquarium is keeping balanced water chemistry. The Marineland Water Care app, combined with Marineland Aquarium Test Strips, makes testing for six important water quality levels nitrate, nitrite, hardness, chlorine, alkalinity, and pH quick and easy!Just dip our test strips directly into your aquarium and compare to the color chart in the Marineland Water Care App. If any of your water quality levels are off, the app will alert you and recommend an easy-to-follow treatment plan. No guesswork or calculating required.The app also makes it easy to set reminders so you never forget to test your tank again.Other features include: In-App Emailing of Test Results Test History Results/History Printing via AirPrint Built-In Water Volume Calculator Metric or Imperial standards Large Easy to Read Scrolling Color Bar Manual Value Entry Option Complete Illustrated Instructions Marineland is a registered trademark of United Pet Group. The application is for end users that have already purchased or are looking to purchase the test strips supported within the Marineland Water Care Application. The app is a resource for aquarium owners. Note : Verify calculations with the product label of the chemicals intended to be used. Instructions on the product package take precedence over the recommendations made by the app. Follow all label instructions for proper chemical handling, storage, and application.