sera provides a broad range of products for freshwater aquariums.
Here you will find
Here you will find healthy and particularly easily digestible fish food for your freshwater fish.
The new aquarium care system by sera solves all problems in freshwater aquariums with just one product per step.
sera provides numerous technical products for freshwater aquariums.
sera provides a broad range of products for marine aquariums.
Here you will find food for the inhabitants of marine aquariums that match the various feeding habits particularly well.
Good water quality is particularly important in marine aquariums. Here you will find the suitable products for creating optimal water parameters.
sera provides numerous technical products for marine aquariums.
sera provides a broad range of products for ponds.
Be it professional Koi food, food for goldfish or special food for Sterlets - sera pond food optimally matches the feeding habits of each pond inhabitant and at the same time support their immune system. Here you will find the correct food for healthy pond fish ...
Systemic pond care. sera systematizes pond care according to frequently occurring problem situations. Here you will find the right products for systematically ensuring optimal water quality in your pond.
sera provides numerous technical products for ponds.
sera provides a broad range of terrarium products.
Here you will find appropriate staple and additional food for terrarium inhabitants that match the various feeding habits optimally.
In this area you will find care products for reptiles and small animals.
sera provides numerous technical products for terrariums and aqua-terrariums.
There are often discussions going on about technical aquarium equipment: about choosing the correct filter, suitable (LED) lighting or the best heater. There are – especially on the Internet – also different views concerning using air pumps. It is this difficult to find clear and well-founded advice, especially for beginner aquarists. The answers to the most frequent questions are compiled in this contribution.
Fish, other aquatic organisms and plants require a certain amount of oxygen in the aquarium water, which they take up via their breathing organs or the surface, respectively. There are two possibilities how oxygen gets into the water in a natural way: it diffuses into the water via the water surface, which is enhanced by surface agitation. Additionally, the aquatic plants produce oxygen during photo synthesis. The oxygen requirements of the fish is different between the species. Enough aquatic plants and possibly a suitable aeration system should be present when keeping fish that require water particularly rich in oxygen. Good aeration is also required if the fish are ill and need to be treated with medications: Medications often do not only remove pathogens, but also harm useful bacteria. The resulting decomposition process consumes additional oxygen. Several water care products should ideally also be used with good aeration. The temperature also influences the oxygen level: it can get dangerously low during summer due to the heat. Using air pumps is advisable in the mentioned cases.
A membrane pump (e.g. sera air 275 R plus), an air hose and an airstone are required for providing a sufficient oxygen level. The rocker arms, on which the membranes and small permanent magnets are attached, move in the magnetic field of an electromagnet. The membranes move up and down at 50 Hz AC and intermittently press air towards the membrane block outlet, where the air hoses are connected. Prefiltered air is pressed into the outlet through the felt of the membrane block. This movement takes place about 1.5 billion times a year per membrane. For comparison: the human heart beats about 2.6 billion times up to an age of 90 years. The higher the current provided, the stronger the swept volume of the membranes and, correspondingly, pump performance. When the oxygen has been pressed through the felt it passes through the airstone towards the surface as small bubbles.
This depends on the aquarium, the purpose and the desired functions. sera offers membrane pumps in three performance steps: sera air 110 plus, sera air 275 R plus and sera air 550 R plus. Besides aerating the aquarium they can fulfill other tasks as well and supply aquarium devices such as the sera internal filters L or the sera gravel cleaner with air. Furthermore, they are suited for use with the sera automatic feeder for reducing moisture in the food, or for aerating the Artemia or phytoplankton breeding setup.
This overview shows which air pump is best suited for which purpose:
All three models transport the air with at least 100 –140 mbar, which equals as 1.0 – 1.4 m (3.3 - 4.6 ft.) water column. This means that, for instance, a connected airstone still bubbles normally at 1.0 – 1.4 m (3.3 - 4.6 ft.) water depth. The pressure can be increased to as much as 160 – 170 mbar by combining air hoses. The air 275 R plus and air 550 R plus models include a particularly easy electronic adjustment that allows adjusting the air requirement with a rotating knob. Power consumption is very low at 3, 4 and 8 W.
The sera air pumps are very quiet. Advice: You will receive the best results when hanging up the air pumps – when doing so, no vibration is being transmitted to a cupboard etc.
In addition to the air pump, sera provides non-return valves for all models, which prevent water being drawn back into the air pumps. The air 275 R plus and air 550 R plus models include Y-pieces that allow combining several outlets into one air hose for increasing the volume along with simultaneous pressure increase. Particularly flexible air hoses with airstones and flow regulators are available separately as sera air sets S, M and L, suitable for the sera air 110 plus, 275 R plus and 550 R plus.
The heart of the air pump, the membrane block, can be replaced completely. The filter felt collecting atmospheric dust can be replaced just as easily by the drawer construction.
You will find the technical data for our three membrane pumps here: