Positive Grow B.V.
Cornelis Trooststraat 31-35
1072 JE Amsterdam, The Netherlands
Tel. +31.(0)20.4708600
Fax. +31(0)20.4708588
Chambre of Commerce: 33289628
VAT nr.: NL805893271B01
Email: info@positivegrow.nl
Webdesign by Pantheon BV

Air and Ventilation

TIP!
If the air tube to the ventilation opening is very long, place a tube ventilator in order to limit the reduction in power.
The turf in the Amsterdam Arena footbal stadium is a good example of the importance of light and air to the healthy growth of plants. Lack of these will result in an inferior quality of turf.

Apart from good lighting in your growing space, good ventilation is therefore of great importance to get healthy plants and a high return. The air we breathe contains nitrogen (N), carbon dioxide (CO2) and oxygen (O2).

Oxygen is important in the process of burning hydrocarbons. Carbon dioxide is indispensable for the process on photosynthesis. Without carbon dioxide the plants will definitely die. Plants use more carbon dioxide than oxygen. For mammals, which include humans, it is the other way round.

Skimping on the purchase costs of a ventilation system is a mistake that many beginners make. Remember, it is a lot more difficult to amend your ventilation system once you are up and running (disconnecting, dismantling and re-housing etc.). The capacity you need to obtain good ventilation depends on several factors, the size of the room, the amount of light and the technical building limitations.

Remember that fresh air is not only necessary for the ventilation of your laboratory but also to get rid off the well known smell that flowering plants produce, especially during the period of drying and cutting. Most growers have been caught during that period because of the smell!
TIP!
To get the maxmimum cleaning capabilities out of a carbonfilter the can filter hose has to be changed every three months.

To prevent that nuisance, Positive Grow sells a wide assortment of top quality carbon filters

To fight the stench the quality of the carbon and the method of filling are of utmost importance. The capacity of the ventilator(s), the diameter of the supply and draining tubes and the size of the carbon filters must be attuned. When for example the process of refreshing the air goes too quickly, the filtering of the air will only partially take place (this is because of the so-called “STAND TIME”, the speed of the transport of the air through the carbon filter. If the process of refreshing the air goes too slowly, the laboratory becomes too hot and the return of your crop will be significantly lower. For the supply and draining of air in the laboratory Positive Grow sell powerful and compact ventilators.

The employees of Positive Grow will be pleased to take the time to determine with you what the best choice is for your specific circumstances.
TIP!
Leave the ventilator on low in winter when the lights are off. If it gets too cold, use an extra heater.