75 gallon tank: size, liters and setup numbers
The 75 gallon has the same 4 foot length as the 55 but is much deeper front to back. That extra depth makes it a favorite for aquascapes, cichlids and larger community tanks.
| Typical dimensions | 48 × 18 × 21 in 121.9 × 45.7 × 53.3 cm |
|---|---|
| Volume | 75 US gallons 283.9 liters |
| Realistic water after substrate and decor | About 63.8 gal About 241.3 L |
| Water weight | About 626 lb About 284 kg |
| Gravel for a 1 inch bed | About 50 lb About 23 kg |
| Gravel for a 2 inch bed | About 100 lb About 45 kg |
| Heater (room 8°F / 4.4°C cooler) | 2 × 100 W |
| Heater (room 15°F / 8.3°C cooler) | 2 × 200 W |
| Filter flow (4 to 6 times per hour) | 300 to 450 GPH 1,136 to 1,703 L/h |
Dimensions vary a little between brands. For exact numbers, measure your tank and use the calculators below.
Plan the rest of your 75 gallon tank
Common questions
- How many liters is a 75 gallon tank?
- A 75 gallon tank holds about 283.9 liters when filled to the brim. With substrate and decorations, the real water volume is usually closer to 241 liters.
- How much does a 75 gallon tank weigh when full?
- The water alone weighs about 626 pounds (284 kg). Glass, substrate and rock add more on top, so choose a stand rated for the full weight.
- What size heater does a 75 gallon tank need?
- If your room stays around 8°F below your target water temperature, a 2 × 100 W heater is a good fit. For colder rooms, around 15°F below target, go with 2 × 200 W.