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XpertsPet

Discus Housing Calculators and Tools

These calculators size your discus's living space: the minimum and recommended dimensions, how much bedding or substrate to buy and what fits in the space you have. All 3 are free, quick and based on discus reference data.

Housing3 tools

All 3 discus housing tools

Discus Housing tools: what they help with

These calculators size your discus's living space: the minimum and recommended dimensions, how much bedding or substrate to buy and what fits in the space you have. Too little space is one of the most common welfare problems in pets. The right size gives a discus room to move, rest and behave normally.

What to know about housing and enclosure size for discus

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.

Discus quick facts

Reference values for discus from the species data behind this tool.
MeasureDiscus
Typical lifespan10–15 years
DietCarnivore
Mature atAbout 1.5 years
Clutch size150–300 eggs

A practical tip

Treat the minimum as the floor, not the goal. Bigger is almost always better, especially for active or social species.

Other discus topics

Discus care rarely sits in one box. You may also find these useful: discus age tools, discus behavior tools, discus breeding tools and discus cost tools. Or see every discus tool in one place.

Housing tools for other pets

The same kind of tool exists for other species, each using that animal's own reference data: goldfish housing, betta fish housing, guppy housing and molly housing.

Frequently asked questions

What size enclosure does a discus need?

The housing calculators give a minimum and a recommended size based on adult body size and activity level, drawn from welfare guidance for the species.

Which discus housing tool should I use first?

Most people start with the Discus Tank Size Calculator, the most used tool in this group. If your question is more specific, the list above describes what each of the 3 tools does.

How accurate are the results?

They are estimates based on published reference data for discus, and each tool lists its sources. Individual animals vary, so treat results as a guide and check health decisions with your vet.