Plants need ventilation to grow without problems, since the air in a closed room becomes stale, and if we do not renew it, the plants suffer stress and will have problems growing.

It is very useful for those who do not want odors to escape, since you will be able to see that the output flow is greater than the input flow, and the negative air pressure in your room is something fundamental and indispensable for these cases.

You can also check the temperature of the incoming air (cooler) and the outgoing air (warmer) since with ventilation we control the temperature of our room, which is essential for plants.

If you use a potentiometer to regulate the revolutions or speed of the extractors, you can also check the air flow in this case to adjust it and set it as the plants need, knowing that it is adequate.