air pump for aquarium
We continue our series of articles about the device and equipment of the aquarium. This time the article will be devoted to water pumps. We will tell about his tasks, about pros and cons, about whether it is possible to do without a water pump in an aquarium and whether there are any alternatives to it. Next, everything in order.
One of the most important devices that ensure the full functioning of the aquarium, is a water pump. What is it for? The inhabitants of the aquarium, although they live in water, nevertheless need oxygen. Oxygen is necessary for them as well as to all live inhabitants of our planet for breath. Of course, water is saturated with oxygen due to the vital activity of plants and natural exchange with the air environment. But very often, the surface of the water that the aquarium has and the number of plants that grow in the aquarium is not enough to fully saturate the water with oxygen. In this case, you have to use additional devices that will saturate the water with oxygen. This problem is solved by the water pump. He presses air from a room into an aquarium.
To effectively saturate the water with oxygen, the air is broken into small bubbles using a diffuser. Passing through the water column, the bubbles saturate the water with oxygen. Thus aeration of aquarium water occurs. The efficiency of water saturation with oxygen depends on the area of contact of air bubbles with water. The total area of contact between a plurality of bubbles is larger than the contact area of one bubble, equal in volume to this set. That is why the diffuser is used. From this we can conclude that the smaller the air bubbles, the better. Firstly, as we said, the contact area with water increases, and secondly, small bubbles rise to the top longer, which makes it more efficient to saturate the water with oxygen.
And so, water aeration is the main function of a water pump. But by performing this function, two more tasks are simultaneously solved, which are necessary for the functioning of the aquarium. First, it is the breaking of the bacterial and dust film that forms on the surface of the water. Even if the aquarium is closed with a lid, these films form on the surface of the water. Their breaking also contributes to the saturation of water with oxygen. And, secondly, it is mixing of different thermal layers in the aquarium, and equalizing the overall temperature in the aquarium, which is also very important. Warm water layers form around the heater and, when aerated, are mixed with colder water.
The required capacity of the water pump depending on the volume of the aquarium
The capacity of the installed water pump depends on the volume of the aquarium. The dependence is directly proportional – the larger the aquarium, the greater the performance of the water pump. The optimal performance of a water pump is 0.5-0.7 liters of air per hour per liter of water. But, this is the bottom bracket. As a rule, it is recommended to purchase high capacity water pumps. Why? For example, you decide to install a second nebulizer in the aquarium. This, as you understand, requires additional power from the water pump and additional capacity. More powerful water pumps need to be bought in those cases if the aquarium is high. Here the water pump will need to overcome the water pressure. In addition, the power of the water pump also depends on the diffuser. The smaller the holes, the greater the pressure necessary to create a water pump.
As a diffuser air can act as natural elements, and industrial. The natural elements can be small stones or a porous stone, under which a perforated hose from a water pump is laid. Industrial lenses, which used to be watering cans from the shower, are now made in the form of marine mollusks or other inhabitants of the aquarium, and are not in conflict with the design of the aquarium.
As we said earlier, pay attention to the bubbles emitted through the diffuser. It is better to take the lens that provides them with the smallest size.
The main drawback of a water pump is noise. No matter how the manufacturers struggle for noiselessness, they have so far failed to win this fight. Yes, it was possible to reduce the performance of this parameter to 25-30 dB, but it is all the same, quite a lot. As a rule, aquariums are installed either in the bedroom or in the nursery, and since the water pump sometimes works around the clock, its noise in the silence of the night is very noticeable. The craftsmen are hiding water pumps in self-made soundproof boxes, which is a good way out of this situation.
The second drawback is the work of electricity. And how do you know electricity and water are incompatible concepts. Therefore, when installing and operating a water pump, it is necessary to exercise elementary caution.
Water pump care, preventive maintenance
To work flawlessly, a water pump needs care. It consists in the following:
– regular replacement of air filters (if they are available at its entrance);
– control and replacement of rubber membranes (often because of the rupture of the membrane accounts for the entire water pump, as a repair kit is very difficult to find for a particular model);
– regular cleaning of the diffusers (pull out and rinse in clean water, thereby reducing the resistance of the diffuser);
– monitoring the condition of air hoses, and replacing them if necessary.
As an alternative to the water pump, an oxidizer can be offered. It is extremely simple in design and operation of the device. It does not require the supply of electricity or the installation of batteries, and it is absolutely silent because only chemical reactions occur in it. The principle of operation of the oxidizer is the decomposition of hydrogen peroxide (H2O2) into water (H2O) and active oxygen (O), under the action of a catalyst. As a catalyst, there are metals that, when oxidized, take a part of the active oxygen, and the excess oxygen is released into the water.
In order to put the oxidizer into operation, it is necessary to fill it with 3% or 6% hydrogen peroxide, close the perforated cover, put the catalyst inside the peroxide can, and lower it to the bottom of the aquarium.
As a result, the catalyst will interact with peroxide, oxygen will begin to rise to the top of the can, creating an overpressure. Under the action of this pressure, the peroxide will be forced out through the perforated bottom cap. Here, she also under the action of the catalyst, in a stand, will disintegrate into water and oxygen.
For a one-pound aquarium, an oxidizer of 8.5 cm in diameter and 8.5 cm in height is sufficient. The oxidizer lasts 3-4 weeks, after which it is necessary to refill it with hydrogen peroxide. Catalysts have a much longer service life.
To increase the intensity of oxygen evolution, it is necessary either to increase the number of catalysts, or to fill in more saturated hydrogen peroxide. For example, if, instead of 3% peroxide, pour 30%, then the amount of oxygen released will increase 100 times.
Be careful with hydrogen peroxide, as it is a strong oxidant, especially concentrated. In direct contact with the skin, it does not matter whether your fish or fish will burn.
Burns from skin contact with 30 percent hydrogen peroxide.
Some not experienced aquarists recommend adding peroxide to the aquarium, such as to increase its oxygen concentration. In fact, without a catalyst, peroxide will be an oxidizing agent, as a result of reactions with it, oxygen will not be released. The example above is a chemical burn, the oxidation of skin. Do not allow hydrogen peroxide to enter the tank without directly interacting with the catalyst, as in this case, there will be no benefit from it.
So, besides the alternative to use the oxidizer for a mobile aquarium, you can use a water-powered pump. Yes, there are those. Their pros and cons are obvious. The advantages include mobility, due to autonomous power sources, safety, when compared with the same oxidizer. Cons as always the continuation of the merits, namely: low power, replacement of autonomous power sources.
In any case, battery-powered water pumps are in some cases indispensable helpers for your aquarium dwellers. You yourself are clearly aware of these cases. For example, when carrying, transporting fish. With a long power outage, the battery-powered water pump can be used as an emergency option, instead of the main water pump in the aquarium. The price of such a water pump is from 10 and up. Not so expensive for the alternative.
water pumps for aquarium
Water pumps for the aquarium play a very important and necessary role. A closed aqua system needs constant aeration of water to provide vital oxygen to its inhabitants. Water pumps for the aquarium are chosen for a little noise and the required performance based on the volume and depth of the aquariums.
Electric diaphragm water pumps for the aquarium are single-channel and multichannel. If you have only one tank volume, of which 120 -168 liters, a two-channel water pump is quite suitable for you. In any case, buying water pumps for the aquarium should consult with the seller and read the recommended specifications and instructions.
water pump two-channel "TRITON" 1902 (2? 2 l / min)
Two-channel water pumps for aquarium for aeration of water.
– Voltage: 220 V
– Pressure: 0.02 MPa
– Productivity: (2 × 2 l / min)
– The volume of the aquarium: 120-168 l
If you have a fish farm from several large aquariums in this case, you will need a more powerful water pump. You can solve the problem of aeration of several aquariums using tees splitters for hoses. You need to know that water pumps significantly reduce their performance in deep aquariums, as well as if the sprayers are very dirty.
Using water pumps for aquarium is not entirely appropriate compared with mechanical filters. The reason for this is a suspension that is present in the water and settles on the leaves of the plants, giving the aquarium an untidy look. Immediately it should be noted that air-lift filters are ineffective compared to mechanical ones.
In general, the aquarium is better to use mechanical filters. A working mechanical filter can be adjusted, so that the water flow will mix with air and enrich the water with oxygen, and the water in the aquarium will be constantly clean and clear.
Water pumps are more suitable for spawning and nursery aquariums, where calm water does not damage caviar and fry. However, in the rearing aquariums, the suspension is not rarely accumulated and the biological balance is disturbed, which will always be easy to restore if you use the correct aquarium layout scheme.
According to this scheme, a common aquarium is installed on the upper shelf of the rack. Below are established nursery aquariums. The installed common aquarium above the nursery makes it easier to work when changing water in nursery aquariums, when water from above can be drained through the hose.
The huge benefit is that you drain the water with a healthy biological environment, which will heal and restore the biological balance in the nursery aquarium. When transporting fish, you must use autonomous water pumps for aquarium, powered by batteries. Such water pumps for an aquarium give a reliable guarantee that you will safely bring your fish to the destination.
Atom-2, – water pumps for aquarium on batteries for enriching the water with oxygen on the road or during a power outage. Single-channel without performance adjustment has a simple design, ensures reliable operation for a long time.
Perfect when transporting fish.
Included without spray gun and air tube.
Frequency: 50/60 Hz.
Performance adjustment: 1.
Optional: on batteries.
Battery type: R14.
In fact, silent water pumps for the aquarium (diaphragm, valve) do not exist. Any water pumps for the aquarium, whether they are of foreign or domestic production, emit noise. True to compare them with counterparts of the first editions of the AEN type is not necessary.
To save yourself from the annoying noise of a water pump, you need to foresee a place where the aquarium will stand. It is not advisable to place a water pump in the bedroom. If during the day the noise of the water pump may not be noticed, then at night, when all the noise is amplified, the noise of even the lowest noise water pump will roughly get you.
Otherwise, to get rid of the noise of the water pump in the bedroom you will have to move the aquarium to another room, which is very laborious. You can turn off the water pump at night, but it is not recommended to do this when the heater is turned on or the overcrowded aquarium.
If you have a not quite sensitive dream, then the installation of a mechanical filter, whose noise even at night is barely audible, can save the day. Another possible way to get rid of the noise is to install a water pump in the hall and hold the air hose from it already in the bedroom.
Water pumps for an aquarium can increase the noise due to dirty sprayers, as well as a tightened hose clamp with a constant power control, because the greater the load on the water pump, the greater the noise. To replace a contaminated sprayer, you must always have a replaceable one, but if the sprayer is made of stone, it can also be cleaned.
To do this, put the spray gun on the burner of the gas stove and heat it red-hot, then let the spray gun cool down completely. Usually after this treatment the sprayer works as good as new. Ceramic sprayers must be dried. But even if it is impossible to eliminate all possible causes of noise amplification completely, it will never succeed.
A strict rule during the installation of a water pump is to install it above the water level in the aquarium. If the water pump is below the water level, then after it is turned off, it can suck up water, which becomes very dangerous during its further operation, and there is a threat of flooding the apartment, therefore, you need to install the water pump above the water level.
It is not difficult to install a water pump above the water level. To do this, you need to drive a nail into the wall and fix a water pump on it. Sockets should be at such a distance from the aquariums that in the event of the flow of the aquarium water on them does not fall. It is forbidden to place the water pump on a shelf or cabinet and even more so above the aquarium, as the water pump vibrates during operation and may fall.
At the time of purchase, choose water pumps that match the voltage of your network, as well as the performance corresponding to your aquarium. Powerful water pumps, in small tanks, create too much air flow, which can be reduced only by the hose clamp, which creates additional load and noise, and also the electric motor overheats, which is not safe.