Why Not Keep The Fish Tank Filter Off?

Because in the filter live bacteria that need oxygen. Disabling the filter you deprive them of this. Without oxygen, they die and go dead. After turning on the filter, all this muddy flies into the aquarium, causing very undesirable consequences, to the point that everyone else begins to die and go out.

Because in the filter live bacteria that need oxygen. Disabling the filter you deprive them of this. Without oxygen, they die and go dead. After turning on the filter, all this muddy flies into the aquarium, causing very undesirable consequences, to the point that everyone else begins to die and go out.

and if we have an external filter in the lid of the aquarium with oxygen access?

Why bother? Don’t you worry about working refrigerator?

worried about the safety of electrical networks.

Here you have already been given a complete and accurate answer to this question:

Because in the filter live bacteria that need oxygen. Disabling the filter you deprive them of this. Without oxygen, they die and go dead. After turning on the filter, all this muddy flies into the aquarium, causing very undesirable consequences, to the point that everyone else begins to die and go out.

Why Not Keep The Fish Tank Filter Off?

Everything is just like that.
From myself I will add only two things:
1) Fish Tank Filter – a device designed for continuous continuous operation. Like a fridge, for example. And including – designed exactly in terms of electrical safety. Cases of fire due to the closure of Fish Tank Filters I do not know.
2) If the filter has stayed off for two hours or more – it must be rinsed before switching on in order to wash out the dead and decaying bacteria from it.

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Here you have already been given a complete and accurate answer to this question:

Because in the filter live bacteria that need oxygen. Disabling the filter you deprive them of this. Without oxygen, they die and go dead. After turning on the filter, all this muddy flies into the aquarium, causing very undesirable consequences, to the point that everyone else begins to die and go out.

Everything is just like that.
From myself I will add only two things:
1) Fish Tank Filter – a device designed for continuous continuous operation. Like a fridge, for example. And including – designed exactly in terms of electrical safety. Cases of fire due to the closure of Fish Tank Filters I do not know.
2) If the filter has stayed off for two hours or more – it must be rinsed before switching on in order to wash out the dead and decaying bacteria from it.

the arrangement of my filter is a large box with a layer of faience pipes, then a layer of white micro-sponge, then a layer of coal, then another layer of the same sponge.
what to wash? only sponges?

There is no need for coal there. Throw it out and replace either with a large-pored sponge such as Juwel.
Rinse after a long stop filter need everything: bacteria live in sponges and tubules.

Why Not Keep The Fish Tank Filter Off?

If the filter is located in the lid, then I just don’t understand what is the reason for turning it off? It cannot leak, ignite too, performs an additional function of saturating water with oxygen (by increasing the surface of the water).

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If the filter is located in the lid, then I just do not understand, what is the basis of the desire to turn it off? It cannot leak, ignite too, performs an additional function of saturating water with oxygen (by increasing the surface of the water).

there are reasons for sure. now I will know why not.

From the point of view of fire safety, brought to obsurd, electrical appliances in the house in order to avoid ignition of these, in the absence of people should be de-energized. Everything. . This can be done in two ways.
First, pull out all the plugs from the electrical outlets and unscrew all the bulbs from the cartridges.
The second, more correct, de-energize the whole apartment by turning off the automata on the switchboard.
After that, with a clear conscience, you can leave your home with 100% certainty that without you it will not burn from the circuit of electrical wiring and electrical appliances.
Perhaps topstarter means exactly that? For not a single court, when considering the case of compensation for burnt property to your neighbors, I will turn off the filter, because there could be no good bacteria in it.