Free charting tool to monitor water quality

Hello everyone, Im a beginner myself, and I built this website to keep track of your aquariums' water quality: https://awqanalytics.com

Every time you test your water, just log the results and monitor your water quality in an interactive chart.

Unlike similar apps, you can access your account on any device. Information is stored securely on the cloud, and the UI is easy to use.

I built this project myself, so I'm really interested in feedback and features you would like to see implemented.