AquaLog: Aquarium Tracker

Know before you buy. AquaLog checks any fish against your real tank — size, temperament, water, bioload — and tells you what actually fits.

AquaLog is a fishkeeping app that gives you real answers instead of vague advice.

WHAT FITS IN YOUR TANK Most stocking calculators still use the inch-per-gallon rule, which is wrong — waste scales with a fish's mass, not its length. AquaLog models bioload properly and checks every species against your actual tank: volume, temperature range, pH overlap, adult size, temperament and schooling needs. It tells you what fits, how many, and where your load lands after adding them.

A HEALTH SCORE THAT EXPLAINS ITSELF Every tank gets a score out of 100, broken into water quality, maintenance and stocking. You can see exactly which part cost you points and what to do about it. Log ammonia, nitrite, nitrate and pH, and watch the trend build over time.

CATCH PROBLEMS EARLY AquaLog flags conflicts before they become losses — a fish that will outgrow the tank, a predator paired with a snack, a school kept too small, a parameter drifting out of range.

DESIGN YOUR SCAPE Lay out plants, wood, stone and substrate on a real tank canvas before you spend money at the shop.

ASK AN AQUARIST Photograph a fish that looks off and get a likely cause with next steps. Check a species against your tank before you buy it. Ask anything and get an answer backed by a live search.

PLAY AND LEARN Reef Feast is a full arcade game across four ocean biomes. Quick rounds test your instincts on stocking limits, species ID and fish care.

400+ species with photographs, care requirements and compatibility data. Every photo credited to its photographer under Creative Commons.

AquaLog gives general fishkeeping guidance. For a sick or injured animal, consult a qualified aquatic veterinarian.