Online Aquarium Calculators
Take the guesswork out of fishkeeping with AquaStream’s free aquarium calculators. From tank volume to filter flow rate and fish stocking levels — make precise decisions for a thriving aquatic ecosystem.
Aquarium Water Volume Calculator
Aquarium Flow Rate Calculator
Aquarium Stocking Calculator
Why Use AquaStream’s Tools?
- Accurate: Based on scientific formulas and real hobby data.
- Trusted: Created by experienced fish keepers with years of hands-on experience.
- Beginner-friendly: No signup needed, works on all devices.
- Research-backed: Guides and articles on planted and community tanks.
All AquaStream tools are regularly updated for accuracy and mobile support in 2025.
Made by Shifu Tanks
AquaStream is created by Devagya Uikey (Shifu Tanks), a 2× biotope aquarium contest winner. These tools come from years of real-world aquascaping experience to help you build a balanced and beautiful aquarium.
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Frequently Asked Questions
Are these tools free?
Yes! All AquaStream tools are completely free to use without a login or subscription.
Are these calculators accurate for saltwater tanks?
They work best for freshwater systems. Saltwater tanks may require extra adjustments due to biological load.
What’s the ideal flow rate for planted tanks
Generally, 5–10× tank volume per hour. Adjust for plant density and filter type.
Can I use these tools for ponds?
Yes, the Volume and Flow Rate calculators work great for ponds too.
Do these tools work on mobile?
Absolutely. All AquaStream tools are responsive and work on phones and tablets.