120P (64 gallon)

120P is a 120 × 45 × 45 cm (47.2 × 17.7 × 17.7 in) aquarium, about 243 L (64 gal) to the rim. Its footprint is 120 × 45 cm and the water stands about 39 cm deep once a 6 cm substrate layer is in — the two numbers that decide what you can plant in it and what you can stock it with.

Start a tank this size

At a glance

Size120 × 45 × 45 cm (47.2 × 17.7 × 17.7 in)
Volume243 L (64 gal)
Water after substrateAbout 194 L (51 gal) with a 6 cm substrate layer
Footprint120 × 45 cm (47.2 × 17.7 in)
Water depth39 cm (15.4 in)
Substrate neededAbout 32 L for a 6 cm layer

Before it goes in

  • 120P is 120 × 45 × 45 cm (47.2 × 17.7 × 17.7 in) — about 243 L (64 gal) to the rim, and roughly 194 L (51 gal) of actual water once a 6 cm substrate layer and the hardscape are in.
  • That layer takes about 32 L of substrate, which is what you order by.
  • 148 of the 160 animals in this library list a minimum tank at or under 243 L (64 gal). The biggest of them that still fit are Denison Barb and Dojo Loach. Silver Dollar and Discus need more than this.
  • The water sits about 39 cm (15.4 in) deep over the substrate. Plants that get taller than that — Hygrophila corymbosa 'Siamensis' and Water Sprite — reach the surface and start growing along it, which is a look you either want or trim.
  • Its footprint is 120 × 45 cm, and that is the area a carpet has to cover — the number that decides how many pots you buy, not the volume.

What are its dimensions?

120 × 45 × 45 cm (47.2 × 17.7 × 17.7 in).

How much water does it hold?

About 243 L (64 gal) to the rim, and roughly 194 L (51 gal) of actual water once the substrate is in. Stocking works off the second number; minimum-tank-size advice works off the first.

How much substrate does it take?

About 32 L for a 6 cm layer.

What fits in it?

148 of the 160 animals in this library list a minimum tank at or under its volume, and the water depth of about 39 cm sets which plants can grow without reaching the surface.

What fits in it

Often compared with

120P55 Gallon75 Gallon
Size120 × 45 × 45 cm121.9 × 33 × 53.3 cm121.9 × 45.7 × 53.3 cm
Volume243 L208 L284 L
Footprint120 × 45 cm121.9 × 33 cm121.9 × 45.7 cm
Water depth39 cm47.3 cm47.3 cm

More tank sizes