You no longer need an account to use Hydro-Calc.

Just open the app and start working. No sign-up, no email, no password.

What You Get

• Global Substance Library — Browse and use our full database of hydroponic chemicals.
• Temporary Shelf — Add substances to your session shelf for calculations.
• Mixture Builder — Create formulas and run calculations against your nutrient targets.
• Water Quality — Factor in source water analysis as normal.

One Limitation: 24-Hour Expiry

Anonymous data is temporary. Everything you create is automatically deleted after 24 hours.

WARNING

Save your work by creating an account before your session expires.

Upgrading is Instant

Register or sign in with Google while in an anonymous session and your data carries over automatically — mixtures, shelf items, everything. No re-entry required.

Open the app and start formulating.