Pumps are usually the main cause of the problem because the loud humming noise can be irritating at times. There are several methods to go about solving this problem and one of the best solutions is to try by insulate the pump body with soft materials for example like sponges in order to absorb the vibration. Usually the noisy pump problem can be prevented in the first place during the time when you shop for your aquarium filter by testing it out at the pet shop and listening to the hum before you purchase. However, since you’ve already made up your choice and then realizing the mistake, the only way to get around it is to take the preventative measure mentioned above to eliminate the aquarium noise.
Another possible solution to prevent noise is by hanging the pump (provided that the size is small weighing less than one kg) and leave it dangling without touching the surface. But be careful to make sure that the pin or nail is sturdy enough to hold on to the weight or else, consequences of dropping to the floor will definitely cause permanent damage to the aquarium pump. Sometimes, noise can also be generated due to jammed up mechanical parts like bushing and worn out shaft while for air pumps, usually the main cause is the clogged up air output line. If you don’t have necessary experience dealing with mechanical parts, a good idea to go about doing this, is to enlist the help of a friend who has knowledge of servicing and repairing damaged items. However, be forewarned that opening up the pump will usually void the item of warranty, so make sure you’ve made the right choice.
Another alternative which I’ve found to be most effective is to make an extension to the electrical cord so that you can place the noise generating pump far away from the living room, an ideal location is a well-ventilated store room. Since this one requires the help of an electrician, be prepared to spend some money if you intend to relocate the it to a different location.
Dealing with noise generated by water flow is rather straightforward, as there are several approaches to go about doing it. Most of the time the noise usually come from dropping water stream and therefore the only way to get around this is to extend the piping so that the water flows straight directly beneath the water surface. The main disadvantage if you are doing this is that, this will actually limit the exchange of gases since there is now less surface agitation. Therefore, this is basically a give-and-take situation and of course if you have an under-stocked aquarium tank with enough oxygen supply for every fish, then this might not come as an issue at all in the first place.
Air stone is also another major cause with the bubbling noise and similar like before, you can actually remove it, if you feel that the level of dissolved oxygen in the aquarium is already at the healthy level. These can also be substituted by having live plants to generate more oxygen rather than relying on air stones which is the main cause of noise problem.
Which one is better? Saltwater or Freshwater Aquarium?