Hydro-CalcPrecision Hydroponics

A professional tool for building, optimizing, and managing fertilizer mixtures.

Launch App

Quick Start Guide

Powerful Solver

Automatically calculate the exact amounts of salts needed to hit your target PPMs.

Advanced Controls

Control solver settings by setting minimums, maximums, and more to hit targets prefectly.

Share and Exchange and Clone

Share created mixtures or import those from others, use cloning tools to match outputs with other inputs.

Environment Management

Create and manage your targets, substances, and water quality inputs for the solver.

Feed Logs

Track applications, measurements, and costs over time with our logging system.

Large Target and Substance Database

Nutrient targets and 50+ substances integrated.

Latest Update

Unified Observations

4/11/2026

We have just rolled out a refinement to the Feed Log system. This update provides a more observation-based model for reservoir management.

Status Check-ins vs. Feeding Events

To support this new model, we've introduced dedicated shortcuts:

Log Status: For quick environment monitoring (pH, EC, Temp). This keeps your log clean by hiding additives columns for that row.
Log Feed: For when you are actually adding water or substances.

Introducing the Smart Top-Off Calculator

This tool is designed to move your reservoir toward a target mixture using simple ratio logic. It automatically detects your last recorded state and warns you if your planned additions exceed your reservoir's historical maximum volume or if the target is unreachable.

These updates represent a significant shift in how data is stored in the background. While the migration is seamless, these features are considered Active Testing. Please report any issues via Feedback.