One good way to think about your aquarium
is it is like the human body. The water is the blood, the fishes are the organs and the plants are the lungs, but the most important part of this system is the air pump. The air pump is like the lungs of your aquarium. Just like the human body, it can take weeks to die of hunger if you do not have any food. It takes days to die of thirst if you do not have any water. However, it only takes minutes to die of asphyxiation or suffocation if you do not have oxygen.
That is how important your lungs are. In the same way with the aquarium, without a good air pump, the oxygen levels in the water gets so low and unhealthy that your fish dies. It is as simple as that. No pump, no aquarium. Sure there are other important parts like the pump to move the water around and filters to make sure the aquarium is clean, but the bottom line is what will kill your fish first is the lack of oxygen. If we based the importance of a system component based on that, then hands down it is the air pump. A good air pump to consider is the Aquarium Pharmaceuticals Rena Air 400 Pump from Pet Store
This is a very silent pump, so it is great for central locations in your house. It does not cause a nuisance by the loud whirring sound of other pumps. The reason it is very quiet is that it has noise suppression components that dampen the sound. It is also designed to last longer than the competition because it has a specially designed diaphragm system, so that it lasts longer as it pumps. As you know, pumps are heavy impact equipment. There are many parts that get impacted by the moving air. The longer it is used, the higher the chance there might be damage and would stop. The Aquarium Pharmaceuticals Rena Air 400 Pump is designed to prevent this problem. It is also designed so that it is curved and tight fitting.
It has a curved casing and tight-fitting base so that it compliments the look of your aquarium. It looks sleek, it is nice to look at and it fits in with most aquarium setup and it is very quiet. What else could you ask for? A pump that does its job maintaining high pressure and keeping the flow rate of the water optimal. It is sleek and looks good with your system and it is quiet. It has all the considerations you would look for in a good aquarium air pump.
Silent, yet powerful, air pump. Noise suppression chambers, long-lasting diaphragm, unique precision locking base. The innovative use of expansion chambers, curved casing and tight fitting base makes RENA AIR the quietest air pump yet. High pressure enables them to maintain optimum flow rate. UL and CUL approved. For 80-150 gallon tanks, 2 adjustable airflow outlets. 4.5psi. Tune-Up Kit and Replacement Filters available.