Know your tank the way it already knows itself.

ChatGPT knows nothing about your tank. It gives the same generic answer to every hobbyist with your question. TankMind has been building a profile of your system since the day you signed up: your livestock, your parameter history, your past problems, your equipment. That's the difference between a search engine and an advisor who's been watching your tank for months.

It can and will be wrong sometimes. We're transparent about this. The AI is a well-informed second opinion. Treat it the way you'd treat advice from a knowledgeable hobbyist, not a biologist you'd trust with surgery. For anything involving medication dosing or irreversible decisions, verify with a test first. The AI will tell you the same thing.

Your notes are static. TankMind reasons across everything simultaneously. When you ask about a pH dip, it's cross-referencing your last eight alk logs, your livestock list, your dosing schedule, and three past conversations you've had about similar patterns, in seconds. Notes don't do that.

Nothing is deleted automatically. You can download a full export of everything, parameters, livestock, dosing, treatments, sessions, photos, anytime from the Account page, not just after you cancel. If you cancel, your tank memory stays put: resubscribe whenever and it picks up exactly where you left off. And if you ever want it gone for good, one request from the Account page permanently erases everything.

Yes, fully. Each tank profile is separate: saltwater reef, FOWLR, freshwater planted, cichlid tank, whatever you run. The AI knows which tank you're talking about from context, or you can switch explicitly. Parameter tracking, livestock inventory, health checks, and compatibility all work across any tank type.

A full month of access to everything, the full AI, your tank's memory, every tool. We ask for a card to start the trial, but you are not charged during it. Near the end we'll remind you before anything happens. Cancel before day 30 and you pay nothing: no fine print, no "are you sure you want to leave" guilt screen.

Yes, from the Account page. One confirmation step, no retention flow, no "are you sure you want to leave your tank unprotected?" guilt screen. We think retention should come from product value, not friction. If you cancel and come back, your tank memory will be waiting.

An aquarium hobbyist. Not a VC-backed team, not a company that pivoted into aquarium software. Someone who got frustrated asking the same questions with zero context and built the thing they wanted to exist. That context shapes every product decision.

The species library and care guidance are compiled from established references and cross-checked against the authorities professionals actually use, FishBase and the World Register of Marine Species (WoRMS) for biology and taxonomy, Eschmeyer's Catalog of Fishes for naming, and Randy Holmes-Farley's reef-chemistry work for water-parameter targets. It's not generated wholesale by AI, and it's not peer-reviewed marine biology literature. We don't footnote every entry, and we won't pretend that's the same as a formally vetted database. Treat care notes as a strong starting point, not gospel, and always weigh AI or app guidance against your own test results and judgment, especially for anything that can't be undone.