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 Calculators
Browse aquarium calculators for tank volume, stocking, filtration, dosing, and fish care planning.
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 Evaporation Rate Calculator
Calculate daily aquarium water evaporation based on surface area, temperature, humidity, and tank type. Plan ATO reservoir sizing and understand salinity impact.
Aquarium Salt Mix Calculator
Calculate the amount of marine salt needed for your target salinity. Perfect for water changes, new tank setup, and maintaining optimal salinity in reef and marine aquariums.
Aquarium Ammonia Toxicity Calculator
Calculate actual toxic ammonia (NH3) from total ammonia readings based on pH and temperature. Determine danger levels and when emergency action is needed.
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.
Aquarium 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.
Aquarium Fish Compatibility Calculator
Check fish compatibility before adding new species to your aquarium. Analyze temperament, water parameters, tank size requirements, and potential conflicts between fish species.
Aquarium Breeding Tank Calculator
Calculate optimal breeding tank setup for your fish species. Get recommendations for tank size, water parameters, spawning conditions, and fry rearing requirements.
Aquarium Quarantine Tank Calculator
Calculate quarantine tank requirements for new fish, sick fish treatment, and disease prevention. Get tank size, equipment, and medication dosing recommendations.
Aquarium Protein Skimmer Calculator
Calculate the right protein skimmer size for your marine aquarium based on tank volume, bioload, and system type. Get air draw and pump recommendations.
Aquarium Refugium/Sump Calculator
Design and size your sump and refugium. Calculate section dimensions, flow rates, and return pump requirements for optimal reef tank filtration.
Aquarium Water Flow Calculator
Calculate optimal water flow and circulation for your aquarium. Get recommendations for powerhead placement, return pump sizing, and turnover rates for reef and freshwater tanks.
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