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Free Aquarium Tools & Calculators

Use our free calculators to plan your aquarium setup, determine safe fish stocking levels, and make informed decisions. No signup required!

Aquarium Stocking Calculator

Calculate how many fish your tank can safely support based on tank size and fish type.

Our tools are designed by aquarium experts with years of hands-on experience.

No signup, no email required. Just instant results.

Created by fishkeepers with 25+ years experience.

Get answers immediately with our real-time calculators.

Our calculators provide general guidelines, but every aquarium is unique. Visit our store for expert advice tailored to your specific setup.