Free Freshwater Aquarium Tools
Interactive calculators and checkers to help you provide the best care for your freshwater fish
Fish Match Quiz
Take our quick quiz to find the perfect freshwater fish for your lifestyle, tank size, and budget.
Tank Size Calculator
Find the right aquarium size for your fish species and stocking level. Includes product recommendations.
Feeding Schedule Calculator
Get a customized feeding plan with portion sizes, frequency, and dietary recommendations for your fish.
Water Parameter Checker
Check if your water temperature, pH, GH, and KH are in the safe range for your species.
Water Treatment Schedule
Get a weekly water conditioner, fertilizer, and supplement schedule tailored to your tank.
Aquarium Lighting Calculator
Calculate the optimal lighting setup, PAR levels, and photoperiod for your planted freshwater tank.
Tools Built for Freshwater Aquarists
Our tools are being built on aquatic science and experienced fishkeeper knowledge. We're working hard to bring you the best free aquarium tools — check back soon!