Your aquarium’s logbook, and the people who get it.
Log your tanks, record water parameters and share them with fishkeepers around the world. With a forum, a hobbyist marketplace, stores and the WikiTank encyclopedia.
Free for hobbyists. 1848 species with care sheets, 153 WikiTank articles, 7 calculators, 8 languages.
Living room reef
25,4 °C
35 ppt
8,1 dKH
4 mg/l
Last water change 3 days ago · 14 inhabitants
Everything happening in your tank, in one place
Your water, under control
Log temperature, pH or nitrate and watch the trends. We’ll remind you about water changes, tests and the filter.
Will they get along?
Before buying a fish, check whether it suits your water, your volume and the inhabitants you already have.
Try it without an accountAsk people who’ve been there
A forum for each kind of tank, with voted answers and the solution marked.
Buy and sell between hobbyists
Cuttings, home-bred fish and second-hand gear, nearby or shipped.
Start with your first tank: it takes two minutes.
Sign up for free