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Turn off the light in the aquarium at night

maintenance, care, compatibility

Despite the fact that the fish living in an aquarium are designed to entertain and pacify with their external we see their owner, do not forget that they are living creatures living according to the laws of nature. Recall that the fish in nature live in water, rivers, ponds and other bodies of water.

Of course, we all understand that at the bottom of a natural reservoir it simply cannot be as bright and bright as in a backlit aquarium.

By and large, the fish themselves do not need light at all. Light is only needed for two purposes:

Firstly, thanks to the backlight, you can see your pet;

Secondly, if there are live plants in the aquarium, they need light in order for the plants to have a photosynthetic process.

In nature, also around the clock the light does not penetrate into the water column and does not illuminate the bottom continuously. Therefore, having the backlight, you must purchase the light timer in the aquarium. After all, at night there is no need to leave the lamp on.

In order not to forget to carry out the change of day and night and the timer is suitable.

The fish, by and large, do not care whether the light is in the aquarium or not, the most important thing for them is that there is a comfortable temperature near the water in which they live and there is always food for eating. The purity of the water directly for the fish is also one of the first places and occupies the main position rather than the presence or absence of artificial lighting.

In addition, the light can be turned off not only at night but also during the day. You just need to imagine how in nature lighting occurs.

After all, the sun does not shine intermittently. Sometimes it is covered with clouds or the weather is rainy. So in general, the backlight can only be turned on for a few hours a day.

Based on the above, it can be noted that the question of whether to turn off the light in an aquarium is very simple and clear.

Turning off the light is not only possible but necessary, you should not illuminate it continuously throughout the day and all night. In addition, respect for the consumption of electricity will have a nice effect on the change in electricity bills at the end of the month.

Even with the use of energy-saving lamps when they work around the clock, you can also get an impressive figure in a month. In order to prolong the life in the aquarium, it is necessary to adhere to the conditions of the fish as long as possible, bringing them as close as possible to the natural conditions.

The normal life of aquatic plants and living beings is directly dependent on the quality of light. And every novice fan of aquarium fish will certainly have questions: do we need light in the aquarium and why is it needed?

Let’s try to find answers to these questions.

In the old days, fish lovers put their aquarium next to the window for better lighting. However, they soon noticed that if the light from the window falls on the fish house at an angle, then its walls begin to overgrow with algae.

Later, with the advent of modern lighting, natural light for fish in aquariums was replaced by artificial.

In addition to the decorative function, the light in the aquarium also performs an important physiological load. After all, for the proper development of the light is necessary for all living organisms, and its absence causes them to be stressful.

Almost all aquarium fish and plants originated from the tropics, where the light day lasts about 12 hours, regardless of the time of year. Therefore, for their aquarium pets it is better to organize the kind of lighting to which they are accustomed to in nature.

There is still no single answer to the question: do you need to take breaks in the lighting of the aquarium? You can turn on the lamp at about 10-11 am and in the evening turn them off at the same time.

And it is better if the duty to turn on / off the light in the aquarium you will provide a special timer that will do this even in your absence.

Many aquarists are advised to set the intensity of illumination based on one liter of water – a lamp with a power of 0.5 watts. Do not forget to take into account the depth of your aquarium: for fish that live at a depth, you need less light than for shallow ones.

As practice shows, it is possible experimentally to pick up the light in your aquarium, starting from the average 0.5W. If there is an excess of light in the aquarium, the water in it will begin to bloom, and the walls will overgrow with algae.

Under insufficient light, the fish will breathe heavily, small-leaved plants in the aquarium will begin to die, and brown spots will appear on the walls.

Should I turn off the pump and aeration of the aquarium at night?

The filter with the aerator cannot be turned off. They should work 24 hours a day.

On the filter material is a colony of beneficial bacteria and it lives due to the influx of oxygen.

Even a brief shutdown of the light and stopping the filter leads to the fact that it simply dies and after switching on the filter, instead of purifying the water, it begins to release food substances dangerous to fish, resulting from the death of the colony.
To all this I will add that the constant on and off can lead to the fact that the coil “starting torque” will quickly burn and you will have to buy a new

Why not turn off the pump and aeration of the aquarium at night?

Some novice aquarists turn off filtering and aeration for the night, “so that aquarium equipment does not buzz at night.”

Disabling the filter is fraught with problems. In principle, fish and plants can suffer for 7-8 hours without air and filtration, but the beneficial nitrifying bacteria will die in 3-4 hours and, as a result, the biological balance will be broken.


Nitrificators – a group of autotrophic (autotrophy – nutrition of organisms with inorganic substances, carried out by means of photosynthesis or chemosynthesis) of microorganisms capable of obtaining energy for life through the oxidation of inorganic nitrogen compounds. Divided into two groups. The first group oxidizes ammonia to nitrites to form nitrous oxide as a by-product.

The second group oxidizes nitrites to nitrates.

Question: What if, for example, guests arrived, and in the room is a humming aquarium?

Answer: It so happens that well, you just need to “turn off the aquarium” for a while. It is undesirable, but you can still disable something.

For example, reduce the power of aeration. Or disconnect / plug the filter aeration tube.

In the case when such manipulations are inevitable, it is desirable to use hydrogen peroxide – in the appropriate proportion, spray it from the syringe along the bottom of the aquarium.

QUESTION – Today, I finally launched a new akvaruim, however, this is not a dream-aquarium for 150 liters (there is not enough money for it yet), and a new house for a goldfish and a golden catfish for 60 liters (this is not common, but “useful “Volume, i.e. 60 liters of water). In this connection, several questions immediately arose, please help:
1. The seller advised the internal filter with Atman aeration, AT-F301 (to my request for a noiseless filter), when it was turned on, it turned out that it was making a decent noise, but this noise is created by aeration, the air supply power regulator does not save the situation.
ATTENTION, the question is: is it possible to turn off aeration at least for the night (not using the regulator, but to remove the oxygen supply tube itself) so that there is no noise? Do not choke fish because of this?

Maybe someone is familiar with the operation of this filter: it seems to me that it creates a strong current and a lot of bubbles, all the plants and walls of the aquarium in small air bubbles – this is how it should be (the regulator does not help, but if you remove the aeration, it is better)?
2. I bought a thermometer, which showed that the temperature in the aquarium is 20 degrees, is it not enough for a goldfish and catfish and how can I increase the temperature without a thermostat (I, by the way, wanted to buy it, but the seller said it was for gold, since it is cold-blooded, not needed)? What should be the optimal temperature?
3. Well, and the third question, I ask you not to swear strongly, I know that for complete happiness a goldfish needs 50 liters per nose and without any neighbors, but my husband caught fire to buy her a girlfriend, and the sellers’ opinions on this issue were divided. Question: Is it possible to plant another goldfish in this jar, or is it better to take a few catfish, which, as far as I know, are still schooling fish, and maybe someone else can be hooked (I want my husband to please the new fish, he deserved – I bought an aquarium, put it home, and honestly helped install, yes, and after 20 liters a new aquarium really seems to be just huge and empty, because its inhabitants are still very small)?
4. Question to Pikera: I bought a frozen bloodworm on your advice, treated the fish: I was very pleased with the gold one, gave you many thanks, but I can’t feed the catfish, because Gold has time to eat everything, but somehow I don’t want to leave the bloodworms at the bottom for the catfish. How can you feed him?
Thank you in advance for all the help!

ANSWER – Aeration for a night at T = 20 can be turned off, although I would first advise to turn off for a day on a day off and look at the behavior of the fish: if they swallow air from the surface, then alas. I can also advise you to put the L-shaped tube on the filter outlet pipe and direct it to the surface of the water so that there are breakers (even a fountain at will).

This will help saturate the water with oxygen. About the strong flow is the same.

If the flow interferes with the fish (or you) make an outlet through the sprinkler (piece of pipe or hose with holes).
Temperature. I can say one thing – for a catfish, of course, a little, 25-27 are needed.

Gold is more difficult – how many people, so many opinions. I kept both at 17-20 and at 27. No difference.

By the way, the seller probably said cold-water, because all the fish are cold-blooded. Without a heater with a thermostat you can not do.

Buy now.
Fish can be planted if the filter manages and you can provide regular maintenance. Moreover, I realized that you have a fry, and not an adult fish.
The main thing is not to get carried away in the future. Best the enemy of the good.



Nikolay Matveyev

Light off must necessarily. Fishes in fact, the brightness of the light is not so significant, but the light for fish should be approximately in the range from 10 to 14 hours. But light plays a special role in plant life.

I cannot imagine your aquarium with such peaceful fish. Depending on their light-loving brightness is set.

When the day the plants emit oxygen into the water, and when the night carbon dioxide. Both are important. The compressor with a filter can be turned off only if your aquarium is densely populated with vegetation and little populated with fish (for each guppy, daniios – 2 liters of water, swordsman, molly, catfish -3 l), and also temperatures of about 24 degrees are preferable (with more high temperature decreases the concentration of oxygen in the water) and you must be sure that the fish do not overfeed.

If your aquarium is overpopulated, you cannot turn off aeration. Under more favorable conditions at night, you can try to leave only the filter if it is with aeration. Check if the small fish will swallow air from the surface of the water, which means oxygen is not enough.

It is desirable that one device aeration worked constantly! For example, I interfered with sleep, now I’m already used to it, but these devices eat electricity miserable.

And oxygen, moreover, oxidizes substances harmful to fish that come along with food, litter and fish urine into water. Good luck.


The aquarium should mimic the natural habitat of the fish.
– Tropical fish – so they do not need temperature jumps – leave the heater. If your room is not +30.
– lighting remove. The night is all the same.

Ideally, imitate dawn – sunset. That is, the lighting turns on and off gradually.

At home, it is enough to turn off the light in the water and leave it in the room for a while.
– the compressor (aerator) can be turned off – if it interferes with sleep. Provided that the fish are not too much on the volume of water.

Fish and breathe at night too.

El chupacabra

So as not to think about the on-off is convenient to use a timer. Like this.

Turns off and turn on the light (or other electrical appliance) itself at a specified time. Very comfortably.

О admin


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