Energy efficiency in the aquarium: saving electricity without compromising on quality

An aquarium is a living piece of nature within your own four walls. But like any technical system, it requires energy to maintain lighting, heating and water circulation. In Switzerland, there is a strong awareness of sustainable practices and efficient energy use – not least due to rising electricity prices. Many aquarists therefore ask themselves: How can I continue to pursue my hobby with passion whilst minimising my ecological footprint and running costs?

The good news is: with modern technology and a few simple tricks, the energy consumption of an aquarium can be significantly reduced without jeopardising the health of the fish or the growth of the plants.

The biggest energy guzzler: heat

In most home aquariums, the heating element accounts for the bulk of electricity consumption. As many of our ornamental fish originate from tropical regions, they require water temperatures between 24 and 28 degrees Celsius. Since the average room temperature in Swiss homes is usually lower, the heater must constantly work to counteract heat loss.

Efficiency tips for temperature control:

• Use a cover: An open aquarium loses enormous amounts of energy through evaporative cooling. A suitable cover or a glass panel acts as an insulating layer and keeps the heat in the tank for much longer.
• Insulate the back and side walls: A simple polystyrene sheet or a special thermal film on the non-visible sides of the aquarium prevents heat from being wasted by transferring to the room wall.
• Lower the temperature moderately: Check the optimal range for your fish. Many species, which are typically kept at 26 degrees, are perfectly comfortable at 24 degrees. Every degree lower saves around 5 to 10% of heating energy.

Lighting: More light with fewer watts

The days of power-hungry T5 or T8 fluorescent tubes are over in modern aquatics. Anyone still relying on old tubes today is throwing money away. Modern LED systems are the way forward.

LEDs not only offer a better light spectrum for plants (PAR value), but also convert energy much more efficiently into light rather than heat. A switch often pays for itself within just one to two years through electricity savings alone. Furthermore, LED controllers allow for precise control: a simulated sunrise or a midday break during which the light is dimmed saves money and creates a natural environment for the aquarium’s inhabitants.

Modern pump technology: optimising continuous-run pumps

Filter pumps and flow pumps run 24 hours a day, 365 days a year. Here, it is particularly worth paying attention to the wattage. Older pump models often use asynchronous motors, which consume significantly more electricity compared to modern electronically controlled direct current (DC) pumps.

When purchasing, pay attention to the flow rate in relation to power consumption. Modern filters often deliver the same performance at half the wattage. Regular cleaning of the hoses and impeller also ensures that the pump does not have to work against unnecessary resistance, which maintains high efficiency in the long term.

Sustainability in glass: The path to an efficient system

Efficiency in aquatics does not mean sacrifice, but intelligent management. Through a combination of insulation measures, modern LED technology and efficient pumps, an aquarium can now be run far more economically than it could ten years ago. Anyone who pays attention to quality and low energy consumption when purchasing equipment is investing directly in the future of their hobby.

It is often the small details – such as closing the lid or choosing a draught-free location – that, when added up, make a big difference to your annual running costs. A stable, energy-efficient system is also usually more biologically stable, as fewer technical interventions are required.

Here at AQUATANA, we specialise in offering you equipment that is both high-performance and economical. From highly efficient LED lights and insulating mats to the latest ECO filters, you’ll find everything you need for the sustainable running of your aquarium in our shop. Discover our range now and see for yourself how easy modern energy saving can be underwater.