Aquarium Tools & Calculators
Free interactive tools to help you set up and maintain a healthy aquarium.
medical_services Available
Fish Disease Diagnosis
Select the symptoms you see on your fish to get a ranked list of possible diseases with immediate actions and links to full treatment guides.
Health
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calculate Available
Fish Stocking Calculator
Enter your tank size and pick your fish to get a safe stocking recommendation — biomass density (g/L), school-size checks, and sized filter & heater picks.
Stocking
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