210 gallon fish tank size and measurements
How big is a 210 gallon tank? It is about 6.0 feet long (72 in), 24 inches from front to back and 29 inches tall, so it needs a stand or space at least 72 x 24 inches.
- Outside dimensions
- 72 x 24 x 29 in182.9 x 61 x 73.7 cm
- Volume
- 210 US gal795 L, 175 UK gal
- Footprint
- 12.0 sq ft1,728 sq in
- Water weight
- 1,751 lb794 kg
Checked against the manufacturer's specs: the Aqueon 210 gallon measures 72 1/2 x 24 1/2 x 29 5/8 in outside, 343 lb empty. The size above is the rounded standard size most charts use.
Measured from the outside, these dimensions hold about 216.9 US gallons. Real water volume is lower because of glass thickness, substrate, decor and the gap below the rim. Check the real figure with the aquarium volume calculator.
How much does a 210 gallon tank weigh?
A 210 gallon tank weighs about 2,294 lb (1,041 kg) once set up, counting the empty glass (343 lb), the water and 2 inches of gravel. Use a stand rated for the full weight, on a level floor. The fish tank weight guide compares every size.
How much gravel or sand for a 210 gallon tank?
| Bed depth | Gravel | Sand | Aquasoil |
|---|---|---|---|
| 1 in (2.5 cm) | 100 lb | 95 lb | 28 L |
| 2 in (5.1 cm) | 200 lb | 190 lb | 57 L |
| 3 in (7.6 cm) | 300 lb | 285 lb | 85 L |
Based on a 72 x 24 in floor and typical bulk densities.
Different depth? Use the aquarium substrate calculator.
Heater and filter size for a 210 gallon tank
A common rule is 3–5 watts per gallon, so a 210 gallon tank needs about 630–1050 W: three 300 W heaters, spread along the tank suits most rooms. Use the higher end in cold rooms.
For filtration, aim to turn the water over 4–6 times an hour: a filter rated around 840–1260 gallons per hour.
Fish that suit a 210 gallon tank
- Large South American or African cichlids, depending on species
- Big community displays
- Large marine fish-only setups
- Reef tanks with a sump
Starting ideas only. Check each species' adult size, temperament and water needs before buying.
Compare nearby sizes
- Next smaller: 180 gallon, 72 x 24 x 24 in
See every size in the aquarium size chart.
Frequently asked questions
What are the dimensions of a 210 gallon tank?
A standard 210 gallon aquarium measures about 72 x 24 x 29 inches (182.9 x 61 x 73.7 cm), length x width x height. Brands vary by a fraction of an inch.
How long is a 210 gallon tank?
About 72 inches (182.9 cm), or 6.0 feet.
How big is a 210 gallon tank?
It is about 6.0 feet long, 24 inches deep and 29 inches tall, and takes up 12.0 square feet of floor.
How much does a 210 gallon tank weigh when full?
About 2,294 lb (1,041 kg) once set up, counting the empty glass (343 lb), the water and 2 inches of gravel.
How much gravel do I need for a 210 gallon tank?
For a 2 inch bed, about 200 lb of gravel or 190 lb of sand.
What size heater does a 210 gallon tank need?
About 630–1050 watts in total, so three 300 W heaters, spread along the tank suits most rooms.
Last updated .