Ask FishTankMath

Ask about aquarium math, how the calculators work, or how to read the numbers. Free, no signup. Not veterinary advice — for sick fish or tank emergencies, talk to an aquatic vet or your local fish store.

Hi, I'm the FishTankMath assistant. I answer questions about aquarium math (volume, water changes, stocking, dosing), how the calculators on this site work, and common freshwater-fishkeeping basics. I'm not a veterinarian — I can't diagnose or treat sick fish. For emergencies or sick livestock, talk to an aquatic vet or your local fish store.

FishTankMath is not a veterinarian. The assistant covers math, calculator usage, and common freshwater basics — not diagnosis. For real emergencies (sudden ammonia spike, fish acting sick), do a 25–50% water change with dechlorinated, temperature-matched water first, then talk to an aquatic vet.