Aquarium Tools
Aquarium Tools & Calculators
Plan lighting, dosing, CO2, volume, soil and heater sizing with practical tools for freshwater aquariums.
Built for planted aquariums
Free to use
Calculator command center
Choose the calculator for your next aquarium decision.
Fast planning aids for light, nutrients, CO2, volume, substrate and temperature.
Light planning
Aquarium 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 →
Setup sizing
Aquarium Volume Calculator
Estimate aquarium volume based on dimensions, shape and water height.
Open Tool →
Water chemistry
Aquarium pH/CO2 Calculator
Estimate CO2 levels from pH and KH values for freshwater aquariums.
Open Tool →
Substrate planning
Aquarium Soil Calculator
Estimate how much aquarium soil you need based on aquarium size and substrate depth.
Open Tool →
Temperature planning
Aquarium Heater Size Calculator
Estimate heater wattage based on aquarium volume and temperature difference.
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