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.
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Fish planning
Fish Compatibility Checker
Check species conflicts, group requirements, aquarium size, and water parameters.
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Setup sizing
Aquarium Volume Calculator
Estimate aquarium volume based on dimensions, shape and water height.
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Light planning
Aquarium PAR Lighting Calculator
Calculate PAR, lux and photoperiod for planted aquariums and aquascapes.
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Dosing planner
Chart output
Aquarium Fertilizer Dosing Calculator
Calculate nutrient additions and visualize dosing over time for planted aquariums.
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Substrate planning
Aquarium Soil Calculator
Estimate how much aquarium soil you need based on aquarium size and substrate depth.
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Temperature planning
Aquarium Heater Size Calculator
Estimate heater wattage based on aquarium volume and temperature difference.
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Water chemistry
Aquarium pH/KH/CO2 Calculator
Estimate CO2 levels from pH and KH values for freshwater aquariums.
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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