Noise Reduction in Coral Tanks | How to Reduce Pump, Skimmer, and Sump Noise
For those concerned about noise from coral tanks. This guide identifies the noise sources of protein skimmers, circulation pumps, return pumps, and other equipment, and explains concrete methods to reduce noise.
Key Takeaways
For those concerned about noise from coral tanks. This guide identifies the noise sources of protein skimmers, circulation pumps, return pumps, and other equipment, and explains concrete methods to reduce noise.
Why Do Reef Tanks Produce Noise?
Coral tanks (reef tanks) operate many electric devices 24 hours a day, and depending on placement, the noise can be bothersome. If the tank is placed in a living room or bedroom, nighttime operating noise can often become a source of stress. While some noise is inevitable when keeping living creatures, appropriate measures can significantly reduce it.
The main causes of noise can be classified into three categories:
- Equipment vibration noise: Sound from pumps or motors resonating with stands or shelves
- Water noise: Splash sounds and gurgling noises from falling water or air entrainment
- Poor air release: Sound from air accumulating in protein skimmers or piping
By taking appropriate measures for each cause, you can significantly reduce noise.
Quieting Protein Skimmers
The protein skimmer is one of the key pieces of equipment for coral tanks, but many models produce significant operating noise. The main causes of noise are the impeller rotation sound and bubble burst noise inside the skimmer.
Measure 1: Using Vibration-Dampening Mats
Placing vibration-dampening rubber mats or silicone sheets under the skimmer prevents vibrations from being transmitted to the shelf or tank stand. Even non-specialized products, such as vibration-dampening rubber available at hardware stores, can be substituted. Rubber with a thickness of 5mm or more is particularly effective.
Measure 2: Fine-Tuning Air Supply
If too much air is supplied to the skimmer, the foam becomes rough and splash noise increases. Finding the right balance between wet skimming and dry skimming is important. Generally, reducing air supply slightly at night can reduce noise.
Measure 3: Switching to Quiet Design Products
Skimmers with DC motor (direct current motor) technology are significantly quieter than traditional AC motors and allow for fine-tuned speed adjustments. While the initial investment cost is higher, it is worth considering for long-term comfort.