Aquarium Calculators
Essential tools for freshwater and saltwater aquarium hobbyists. Calculate tank volume, fish stocking levels, equipment sizing, water parameters, and maintenance schedules for healthy, thriving aquatic environments.
Aquarium CO2 Injection Calculator
Calculate optimal CO2 injection rates for planted aquariums. Get bubble rate recommendations, estimate cylinder duration, and calculate CO2 levels from pH and KH readings.
Aquarium Filter Flow Rate Calculator
Calculate optimal aquarium filter flow rate in GPH/LPH based on tank volume, stocking level, and tank type for proper filtration and water quality.
Aquarium Fertilizer Dosing Calculator
Calculate optimal fertilizer doses for planted aquariums using EI, PPS-Pro, or lean dosing methods with NPK and micronutrient targets.
Aquarium Heater Size Calculator
Calculate the right wattage aquarium heater based on tank volume, room temperature, and target temperature with single and dual heater recommendations.
Aquarium Lighting Calculator
Calculate optimal aquarium lighting intensity in lumens and watts for planted, fish-only, or reef tanks with PAR estimates and photoperiod recommendations.
Aquarium Medication Dosing Calculator
Calculate accurate aquarium medication doses based on actual water volume with adjustments for sensitive species and re-dosing guidance.
Aquarium Nitrogen Cycle Calculator
Track aquarium nitrogen cycle progress with test readings, calculate fishless cycle ammonia dosing, and estimate when your tank is ready for fish.
Aquarium Substrate Calculator
Calculate exact aquarium substrate amounts in pounds and kilograms for gravel, sand, or planted substrates based on tank dimensions and desired depth.
Aquarium Tank Volume Calculator
Calculate aquarium water volume in gallons and liters for rectangular, cylindrical, bow front, and hexagonal tanks with displacement estimates and equipment recommendations.
Aquarium Water Change Calculator
Calculate optimal water change volume and frequency based on tank size, nitrate levels, and stocking density for healthy aquarium maintenance.
Fish Stocking Calculator
Calculate safe fish stocking levels for your aquarium based on tank volume, species bio-load, and filtration capacity with multi-species support and schooling warnings.
About Aquarium Calculators
Professional Fishkeeping Tools
Our aquarium calculators provide accurate measurements for tank volume, fish stocking, equipment sizing, and water chemistry to help you maintain healthy aquatic ecosystems.
For All Aquarium Types
Whether you're setting up a freshwater community tank, planted aquarium, reef system, or fish-only marine tank, these tools support proper planning and ongoing maintenance.
Key Features
- Multiple tank shape support
- Displacement calculations
- Equipment recommendations
- Metric and imperial units