Aquarium Tools
Plan your aquarium, check fish compatibility, and calculate lighting, dosing, volume, water chemistry and more.
Guided setup
Start here
Aquarium Planner
Build a beginner-safe aquarium setup in a few minutes.
Open Tool →
Fish planning
Fish Compatibility Checker
Check species conflicts, group requirements, aquarium size, and water parameters.
Open Tool →
Plant troubleshooting
Aquarium Plant Problem Diagnosis Checker
Rank likely causes of aquarium plant symptoms using the Plant Library and aquarium context.
Open Tool →
Setup sizing
Aquarium Volume Calculator
Estimate aquarium volume based on dimensions, shape and water height.
Open Tool →
Setup safety / DIY planning
Aquarium Stand Calculator
Check a defined stand or generate a DIY lumber frame, support layout and cut list.
Open Tool →
Light planning
Aquarium PAR Lighting Calculator
Calculate PAR, lux and photoperiod for planted aquariums and aquascapes.
Open Tool →
Dosing planner
Chart output
Aquarium Fertilizer Dosing Calculator
Calculate nutrient additions and visualize dosing over time for planted aquariums.
Open Tool →
Substrate package planning
Aquarium Substrate Calculator
Calculate the volume you need and see current in-stock package combinations for soil, sand, or gravel.
Open Tool →
Temperature planning
Aquarium Heater Size Calculator
Estimate heater wattage based on aquarium volume and temperature difference.
Open Tool →
Water chemistry
Aquarium pH/KH/CO2 Calculator
Estimate CO2 levels from pH and KH values for freshwater aquariums.
Open Tool →
Planning aid
How to use these tools
The calculators are designed as planning aids. Always observe your aquarium and adjust slowly when changing light, CO2, nutrients or temperature.
- 01 Choose your aquarium goal
- 02 Enter your measurements
- 03 Apply the result carefully