Aquarium tank sizes
Compare aquarium tank sizes by dimensions, volume and substrate needed. Browse standard gallon tanks, metric rimless tanks and popular all-in-one kits.US standard tanks
12US aquarium tank sizes are sold by the gallon. The number on the box is what minimum-tank advice means.
Metric rimless (ADA-style)
13Named by length in cm — a 60P is 60 cm long. P is the standard shape, F shallow, H tall, C a cube.
All-in-one kits
9Filter and light built in, rated by the maker. The filter chamber takes some of the box, so the rating is smaller than the glass.
Comparing aquarium tank sizes
How do aquarium tank sizes differ at the same volume?
Aquarium tank sizes with similar capacities can have different lengths, widths and heights. Compare the footprint as well as the gallon label: a long tank and a high tank do not give you the same planting or swimming space. Each entry shows the recorded dimensions in both metric and US units.
How do aquarium tank sizes affect substrate needs?
Use the footprint when comparing aquarium tank sizes for a planted setup. Substrate depth takes space from the water column, and a wider base needs more material for the same depth. The entry page calculates substrate volume from its dimensions; changing the depth changes the resulting usable water depth.
Which aquarium tank sizes suit my layout?
Compare aquarium tank sizes with the height of your plants and the size of your hardscape. Start a tank from an entry to inspect those proportions in the planner, then arrange the materials yourself. Check livestock requirements separately; a layout that fits physically is not a complete compatibility check.
What do aquarium tank sizes measure?
Treat aquarium tank sizes in this library as recorded presets, and confirm the manufacturer’s measurements for the model you will buy. External dimensions, rated capacity and usable water volume describe different things. Entry pages identify those measurements so you can compare like with like and plan the intended substrate depth.