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There are 3 sizes of CO2 hoses: 

• CO2 hose 65mm
• CO2 hose 94mm
• CO2 hose 120mm

The choice of a certain type of CO2 hose depends on your climate. The growing climate determines the amount of CO2 required in the crop and therefore the diameter and the puncture distance of the CO2 hose. Always ask for some advice from a specialist, when choosing a CO2 hose.  In this way you can be sure that the right amount of CO2 is dosed in the crop. If the concentration of CO2 is too low, the crop will not grow well.

Furthermore, it is important to measure the required amount in the right way:

•  When measuring the required length of CO2 hose, you should take into account a measurement loss of 5% because you attach the hose at the beginning and at the end, also because the hose is never completely straight. For example, if a path is 100 meters long, you do not order a 100-meter hose, but 105 meters of hose.
• Frequently one asks about the diameter of the hose. However, a CO2 hose is always measured flat.

Suspending CO2 hoses can be done in two ways:

1. Between the crop
2. Under the gutter

This depends on the growing climate. Ask for some advice from a specialist.

As mentioned earlier, the CO2 hose is attached to a CO2 distributor at the beginning and at the end. For this use adaptors to connect the tubes to the distributor. After that, slide the CO2 hose over the tapered side of the pipe and with the ring, fasten the hose.

To unroll the CO2 hose as quickly as possible during the crop rotation period, you can use a CO2 hoses unroller. CO2 hoses are quite vulnerable, by unwinding the CO2 manually, damage to the hoses often occurs. With an unroller you can limit any damage caused during unwinding. 
The unroller is suitable for the 65 mm and 94 mm hose, but with an attachment you can easily make the device suitable for the 120 mm hose. 

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