This tool provides a general estimate and does not replace professional veterinary advice.
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What is the Discus Tank Volume Calculator?
The Discus Tank Volume Calculator converts tank length, width and height into total water volume for discus setups. Undersized housing is one of the most common and most fixable welfare problems in pet keeping, it affects everything from stress levels to exercise to litter/waste management.
Discus generally live 10-15 years when they are well looked after. They are a carnivore, so their nutritional needs shift with age, size and activity. Discus demand very warm, very clean soft water and near-daily water changes while growing. They are social and should be kept in groups of five or more. This is not a beginner species. Keep an eye out for hole-in-the-head disease, internal flagellates, bacterial infection from poor water. These are the conditions discus are most commonly seen for.
Discus quick facts
| Measure | Discus |
|---|---|
| Typical lifespan | 10–15 years |
| Diet | Carnivore |
| Mature at | About 1.5 years |
| Clutch size | 150–300 eggs |
How does the Discus Tank Volume Calculator work?
The recommendation is based on published care-guide minimums for discus, scaled to the animal's current or expected adult size. Individual discus vary more than averages suggest, so read the number as a reference point rather than a measurement.
Factors that matter
- Adult size: housing should be sized for the animal's full-grown dimensions, not its current size if still young
- Number of animals being housed together, since space needs don't simply divide evenly
- Activity level and natural behavior, such as climbing, digging or swimming space
- Whether the space is temporary (travel/carrier) or permanent (everyday housing)
How do you use the Discus Tank Volume Calculator?
- Enter the tank length in whichever unit you use (in, ft, cm)
- Enter the tank width in whichever unit you use (in, ft, cm)
- Enter the water depth or tank height in whichever unit you use (in, ft, cm)
- Press Calculate, then read the result alongside the sources listed below
Worth doing: jot down the date and the result each time. A single number tells you little, but a trend across a few months tells you a lot about your discus.
For related questions, see the other housing tools or browse every discus tool.
Before you rely on this
Averages hide a lot of variation. The figure here reflects what is typical for discus, but your discus may sit well outside it for perfectly ordinary reasons. Use the result to spot changes over time in your own animal rather than to compare it against other people's pets.
Sources and references
The formulas, reference ranges and species data behind the Discus Tank Volume Calculator come from these veterinary references, professional bodies and published research.
- RSPCAAdvice and Welfarerspca.org.uk(opens in a new tab)
- Merck Veterinary ManualExotic and Laboratory Animalsmerckvetmanual.com(opens in a new tab)
- pdsa.org.ukPDSA Pet Health Hubpdsa.org.uk(opens in a new tab)
- University of Florida IFAS ExtensionAquacultureedis.ifas.ufl.edu(opens in a new tab)
- Merck Veterinary ManualRoutine Care and Breedingmerckvetmanual.com(opens in a new tab)
- Built on veterinary referencesFormulas and ranges come from veterinary manuals, university research and welfare bodies, listed above for you to check.
- Instant resultsNo page reload, no waiting and no account. Enter your details and the result appears straight away.
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