About FixFishTank

Fix your tank in one chat.

Keeping fish should be about the fish, not the second-guessing. We built FixFishTank to be the friend who already knows what's likely wrong with your tank — the one who's read a hundred "why is my water cloudy" threads and can tell you what to check first, in a few short messages.

Chat with FixFishTank about your tank. It asks the right questions, rules out what isn't wrong, and builds your notes in a live document — what's going on, what to do next, what to buy — that updates with every message, so you watch it take shape. Browse gear cards with real specs and prices, add what you like to your cart, or tap a card to buy right from the chat. When you're ready, download the whole thing. No spreadsheets. No hours of forum archaeology. Works on desktop and mobile.

Under the hood, FixFishTank doesn't hand you one answer — it hands you the right shortlist. First it filters the catalog to what fits your tank: size, water type, what you already run. Then it compares each product on the spec that defines it — how many gallons a tank holds against what it costs, say — and keeps only the efficient frontier: the options nothing else beats on both counts at once. What's left is a genuine trade-off, not one obvious winner. You choose from that shortlist by feel. Rational screening, human choice.

From a 55-gallon community tank to a single betta in a 5-gallon, from your first test kit to a tank that's been running for years — FixFishTank turns "what's wrong with my water" into a conversation.

How We Make Money

FixFishTank is free to use, always — no credit card, no subscription, no premium tiers. Answers like this normally cost time (and often money) from a store or a consultant; ours is free because we earn a small commission when you buy gear through our retailer links — at no extra cost to you. No ads, no data selling. That's it. Live animals are never sold here, and if the honest answer is "you don't need to buy anything", we say so.

Team

FixFishTank is built by a small team of aquarists and software engineers who think keeping fish shouldn't require a forum archaeology degree. We are remote, independent, and self-funded — no venture capital, no pressure to monetize your data. Just a genuine love for the hobby and a belief that AI can make it easier to get right.