29 gallon tank: size, liters and setup numbers
The 29 gallon shares the 20 long's footprint but stands taller, so it fits a stand of the same size while holding more water. It is one of the most popular community tank sizes.
| Typical dimensions | 30 × 12 × 18 in 76.2 × 30.5 × 45.7 cm |
|---|---|
| Volume | 29 US gallons 109.8 liters |
| Realistic water after substrate and decor | About 24.6 gal About 93.3 L |
| Water weight | About 242 lb About 110 kg |
| Gravel for a 1 inch bed | About 21 lb About 9 kg |
| Gravel for a 2 inch bed | About 42 lb About 19 kg |
| Heater (room 8°F / 4.4°C cooler) | 75 W |
| Heater (room 15°F / 8.3°C cooler) | 150 W |
| Filter flow (4 to 6 times per hour) | 116 to 174 GPH 439 to 659 L/h |
Dimensions vary a little between brands. For exact numbers, measure your tank and use the calculators below.
Plan the rest of your 29 gallon tank
Common questions
- How many liters is a 29 gallon tank?
- A 29 gallon tank holds about 109.8 liters when filled to the brim. With substrate and decorations, the real water volume is usually closer to 93 liters.
- How much does a 29 gallon tank weigh when full?
- The water alone weighs about 242 pounds (110 kg). Glass, substrate and rock add more on top, so choose a stand rated for the full weight.
- What size heater does a 29 gallon tank need?
- If your room stays around 8°F below your target water temperature, a 75 W heater is a good fit. For colder rooms, around 15°F below target, go with 150 W.