Frequently Asked Questions

Here you will find answers to the most common questions about using Hydro-Calc.

General

Is Hydro-Calc free to use?

Yes, Hydro-Calc is currently free to use. You can create an account, manage your substances, and run optimizations without any cost.

Can I use Hydro-Calc on my mobile device?

Absolutely! Hydro-Calc is built as a responsive web application that works great on desktops, tablets, and smartphones. You can even install it as a PWA (Progressive Web App) for a native-like experience.

Mixtures & Optimization

Why didn't the optimization find a solution?

Sometimes, it's mathematically impossible to hit a specific nutrient target with the substances you've selected. Try adding different substances that contain the missing nutrients, or relax your target constraints.

How do I account for the nutrients in my tap water?

You can create a "Water Quality" profile and associate it with your mixture. The optimization engine will then subtract the nutrients present in your water from the target, ensuring you don't over-fertilize.

What units does Hydro-Calc use?

Nutrient targets are defined in ppm (parts per million). Substance amounts are typically calculated in grams per liter or milliliters per liter, depending on whether the substance is a solid or liquid.

Account & Data

Is my data private?

Yes. Your substances, mixtures, and logs are private to your account. We do not share your personal data.

Can I share my mixtures with others?

Currently, mixtures are private, but we are working on a feature to allow you to share your recipes with the community or specific users.

How do I reset my password?

If you've forgotten your password, you can use the "Forgot Password" link on the login page to receive a password reset email.