About AquaGauge

AquaGauge builds modern, free aquarium calculators and stocking guides grounded in real-tank data — a neutral tool, not a store.

What we do

We make fishkeeping decisions easier and safer: how many fish fit, what size heater or filter you need, and which species are compatible — backed by transparent formulas and aggregated data from hundreds of real aquariums.

Editorial standards

• Every guide shows a publish/updated date and cites its sources.
• Calculators expose their formulas (see methodology).
• We disclose affiliate relationships clearly (see disclosure) and explain how we choose products.
• Stocking guidance is general — always confirm for your specific species.

Who runs AquaGauge

AquaGauge is built and edited by Yevhen Bulhakov, who has been keeping freshwater aquariums for over eight years. He started AquaGauge to answer the common stocking and water-chemistry questions with data from hundreds of real hobbyist tanks rather than the rules of thumb beginners usually get. Connect on LinkedIn.

We also welcome experienced aquarists as named, bylined reviewers — if you'd like to review or contribute, reach out via our contact channel.