How Much Does It Cost to Run an Aquarium (Heater, Filter, Light) in Texas? (2026)
An aquarium's cost is mostly the heater, which cycles on and off to hold temperature, plus a filter pump running all day and lights on for 8 to 12 hours. A 100 litre tropical tank uses roughly 30 to 60 kWh a month.
A typical aquarium (heater, filter, light) (80 W) costs $0.013 per hour, or about $4.59 per month at 12 hours a day in Texas. Average running cost
| Wattage | Per hour | Per day | Per month | Per year |
|---|---|---|---|---|
| Low 30 W | $0.005 | $0.057 | $1.72 | $20.95 |
| Typical 80 W | $0.013 | $0.15 | $4.59 | $55.85 |
| High 300 W | $0.048 | $0.57 | $17.22 | $209.45 |
Formula: watts ÷ 1000 × hours × price per kWh. Typical use is 12 h/day ≈ 350 kWh per year.
One day of an aquarium (heater, filter, light) (1.9 kWh) is the same electricity as
- 11km in an electric car
- 19hours of TV
- 43hours of a laptop
- 213hours of an LED bulb
In Texas, with electricity at 15.9¢ per kWh (source: EIA Table 5.6.A, 2026-06), a typical aquarium (heater, filter, light) costs $0.013 per hour and about $55.85 per year at 12 hours a day. That is about 13% less than the national average for the US ($5.28 per month), because electricity in Texas costs 15.9¢ per kWh against 18.3¢ nationally. Each $1.00 of electricity buys roughly 78.4 hours of use.
How to lower the cost of running an aquarium (heater, filter, light)
- Put the tank away from windows and drafts so the heater runs less.
- Cover the tank. An open top loses heat through evaporation.
- Use LED lighting on a timer for 8 hours rather than 12.
Frequently asked questions
How much does an aquarium cost to run per month?
A typical 100 litre heated tank uses 30 to 60 kWh a month. Pick your region above.
Which part of an aquarium uses the most electricity?
The heater in a cool room. In a warm room, the lights.
Does a bigger tank cost proportionally more?
Less than proportionally. Larger tanks hold temperature better per litre.
Cost by region
US states
- Alabama
- Alaska
- Arizona
- Arkansas
- California
- Colorado
- Connecticut
- Delaware
- District of Columbia
- Florida
- Georgia
- Hawaii
- Idaho
- Illinois
- Indiana
- Iowa
- Kansas
- Kentucky
- Louisiana
- Maine
- Maryland
- Massachusetts
- Michigan
- Minnesota
- Mississippi
- Missouri
- Montana
- Nebraska
- Nevada
- New Hampshire
- New Jersey
- New Mexico
- New York
- North Carolina
- North Dakota
- Ohio
- Oklahoma
- Oregon
- Pennsylvania
- Rhode Island
- South Carolina
- South Dakota
- Tennessee
- Texas
- Utah
- Vermont
- Virginia
- Washington
- West Virginia
- Wisconsin
- Wyoming
Canadian provinces
Related appliances
- Treadmill700 W typical
- Exercise Bike or Smart Trainer30 W typical
- 3D Printer120 W typical
- Sewing Machine80 W typical
Use the generic electricity cost calculator · Which uses more? Take the quiz