Hydroponic Solver

Hydro-Calc automatically calculates the exact amounts of nutrient salts needed to hit your target PPMs.

Fertilizer Optimization

Control solver settings and optimize mixtures by setting minimums, maximums, and more to hit nutrient targets perfectly.

Share & Clone Recipes

Share created fertilizer mixtures, import recipes from others, or clone inputs to match specific target outputs.

Grow Environment Setup

Manage your targets, custom substances, and source water quality to tailor calculations to your hydroponic system.

Grow & Feed Logs

Track nutrient applications, measure EC, pH, and temperature, and monitor fertilizer costs over time.

Nutrient Database

Access pre-loaded nutrient profiles and 50+ global fertilizer substances.

Advanced Hydroponic Nutrient Calculator & Optimization

Welcome to Hydro-Calc, the ultimate hydroponic calculator and fertilizer optimization platform designed for modern growers, agronomists, and hydroponics enthusiasts. Whether you are balancing macronutrients, customizing micro-elements, or adjusting source water chemistry, Hydro-Calc helps you achieve the perfect recipe.

By leveraging advanced linear programming, this tool automatically determines the most cost-effective and precise combination of fertilizer substances to hit your exact target PPMs. Take control of your crop steering, optimize your feed schedules, and track your water quality with professional-grade tools.

Latest Update

Under the Hood Updates

5/26/2026

Today's update consists of entirely behind-the-scenes adjustments to improve overall performance, documentation quality, and application stability.

Under the Hood

Documentation & UX Validation: We've implemented new automated validation and testing pipelines on the backend. This ensures that our documentation, user guides, and overall user flows remain synchronized and reliable going forward.
Backend Performance: Minor optimizations to our backend services for smoother, more consistent database interactions.
General Maintenance: Routine codebase maintenance and checks to ensure everything continues running efficiently.

As always, if you notice anything out of the ordinary, please let us know using the feedback button in the app!

Hydro-CalcPrecision Hydroponics