rmPlan the tank before you buy the fish.
Finform checks a tank plan before a single fish is bought. It tells you who gets along, whether there is room, and what the water has to be.
75 US gal · 48 in long
Featured tank of the week
75 gallon tank, 3 species
- 12× Black Skirt Tetra
- 8× Pearl Danio
- 6× Amano Shrimp
How it works
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Describe your tank.
Pick a size from the list, or type your own, say how planted it is, and save it. That is the box everything else has to fit in.
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Add the fish you have your eye on.
Search by name and add them one at a time. Finform offers company that will get along with what is already in, and holds back anything that would be a risk to it.
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Read the verdict.
Company, room and water, each scored, each with its reason in plain words. Every gap is shown as a gap, because a blank is better than a guess.
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Change one thing at a time.
Swap a species, add a few more, try a bigger tank; the score follows as you go. When it reads right, save the tank on this device and come back to it.
What it checks
- Company
- Whether the species you chose can live together, meaning who nips, who harasses, who eats whom, and which families are a bad pairing.
- Room
- Whether the tank has space for them at the size they grow to, not the size they are sold at, with credit for plants and a good filter.
- Water and numbers
- Whether there is a temperature and a chemistry all of them are comfortable in at once, and whether each shoaling fish has enough of its own kind.
Every fish has a page
109 species and 44 plants, each with what it needs, what it is like to keep, and where every figure came from.
What most people want to know
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Why a planted tank?
A planted tank is a living one. The leaves host the same bacteria a filter does, the plants eat the waste the fish make, and a shoal with cover to retreat to spreads out and colours up. It even carries a little more, which is why Finform gives planting a credit. Read more
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How many fish can my tank hold?
Fewer than the shop will sell you. Finform works it out from every fish's adult size and answers in four words, from room to spare to overstocked. Read more
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What does the score mean?
A mark out of a hundred across company, room, water and shoal size. The number is a summary; the part that helps is which check is losing points. Read more
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Where do the numbers come from?
Published care sheets and compatibility charts, copied by hand, with the sources listed at the foot of every page that uses them. Nothing is invented; a gap is shown as a gap. Read more
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Is it fine to just copy a preset tank?
Yes, that is what they are for. Every one is scored clean as it stands, and scored again each time you see it. Load one, then change one thing at a time. Read more
Starting your first tank?
Start from a tank that already works and change one thing at a time. Finform scores every change, says why, and tells you what to do about it, so the fish you bring home are the ones that will thrive together. More about Finform