Aquarium Calculators
Precision tools for freshwater aquarium planning — stocking levels, heater sizing, and filter flow rates based on established fishkeeping science.
Aquarium Stocking Calculator — Bioload Guide
Plan freshwater aquarium stocking with bioload, species compatibility, and temperature overlap checks. 70+ species database with swim-level balance.
Aquarium Heater Calculator — Wattage Sizing
Size your aquarium heater by tank volume, room temperature, and target tropical temperature. Dual-heater redundancy guidance for tanks over 200 litres.
Aquarium Filter Calculator — Flow Rate Guide
Calculate aquarium filter flow by tank volume and bioload. Turnover targets, media loading factor, and planted-tank adjustment for HOB or canister filters.