Inline Fans

Inline Fans & Revolution Silence EC Fans ~ Ultimate Hydroponic Management

The ventilation of your hydroponic grow room has two critical factors: the removal of hot air (depleted in CO²) and the entry of new fresh air. Air movement provided by fans such as revolution silence ec fans, facilitate the 0²/CO² exchange of stomata (= gain of liveliness) and expand plant structure (= production gain). Hot air is exhausted using an air extractor and the fresh air can either be provided by a passive ventilation (open window) or through the installation of an Air Conditioning unit, which can also be used as an extractor.

Hytec are proud to stock Revolution Silence EC Fans and other market-leading Inline Fans to help hydroponic cultivators maintain fresh air movement in grow tents

In addition to the control over the temperature, the use of fans allows a control of humidity (or hygrometry). Expressed as a percentage, the quantity of water available in the air is measured with a hygrometer. In most cases, a hydroponic grow tent housing plants in vegetative phase (growth) requires the establishment of a humidifier (cold steam and already equipped with a hygrostat preferably). To maintain the necessary 50 to 70% hygrometry; 45 to 50% relative humidity is sufficient for flowering, to avoid any mould. These measurements ensure optimal gas exchange at the stoma level.

How to calculate the size Ø and the extraction rate of the fan m³/h:

The following method is well known and has been approved by many growers:

  • Exhaust required for fan capacity (m³ / h) = [Volume of active growth zone (m³) x change of air per unit of time (hours) x [Rate loss - Charcoal filter]
  • To calculate the volume, multiply the length x the width x the height.
  • In our example with two lamps of 600W, it gives 1,20mx2,40mx2x50m which gives a culture volume of 7,20m³. When you know your volume, you must multiply it by the volume of air to be renewed per hour.

NOTE: For the majority of indoor gardens without air conditioning or CO², the rule of thumb is 1 per minute. In this case, multiply the volume of culture by 60 to calculate the volume of air to be renewed per hour.

Finally, when a charcoal filter is attached to the fan, it is expected to decrease efficiency by 25%. This data is variable and depends on the age of the filter, the length and the circulating power of the ducts used between the fan and the filter and other factors. To evaluate this decrease in efficiency by 25, simply multiply by 1.25.

If we record the equation to our grow tent example this equates to:

  1. [Required air evacuation capacity (m³ / h)] = [Active growth volume area (m³) x 60] x 1.25
  2. [Required air evacuation capacity (m³ / h)] = ((1,2x2,4x2,5) x60) x 1,25

= 540 m³/h

The end result is the minimum extraction size needed.

Result: Revolution Vector 150EC Silenced 796M3/H

Airflow: 540 m³/h

If the growing chamber is in a very well insulated area like a basement, then using that number should be fine. On the other hand, if the growing chamber is located in a location that is very exposed to heat and natural sunlight, such as an upstairs room or an attic, then the size of the extractor needed should be increased by approximately 25%.

By knowing the size of the room and the number of lamps that will be used, you can work on the required ventilation in m3 per hour (m³/h)

For more information or advice, please call 01142280024 or email us at

sales@hytechorticulture.co.uk

To view our range of Inline Fans, click on the sub-categories below.

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  • RAM Bug Barrier
    RAM Bug Barrier This handy product offers superior protection against bugs while having a minimal restriction on airflow. The plastic mesh bug screen easily slips on and off fans and ducting. Elasticised opening and adjustable drawstring create a perfect fit. Catches insects, mould and ..
    RAM Bug Barrier This handy product offers superior protection against bugs whi...
    Ex Tax: £4.13 £4.95
  • DISPOSABLE COVERALLS
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    Ex Tax: £5.79 £6.95
  • 6" clip on fan
    RAM 150mm Clip On Fan (6") The RAM Clip On Fan has a quality high output, quiet motor and sturdy clips. This 150mm (6”) fan has 2 speed settings and an adjustable head It is easy to assemble with a 1.4 metre power cord and UK power supply. ..
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    Ex Tax: £9.58 £11.50
  • Fresh 23cm (9") Air Circulator - 2 Speed
    A must-have product to ensure even room temperature and as an aid to plant transpiration. A must-have product to ensure even room temperature and as an aid to plant transpiration. The FRESH Floor Air Circulator features a high performance motor and has a stylish chrome finish, 360 degree tilt adjust..
    A must-have product to ensure even room temperature and as an aid to plant transpira...
    Ex Tax: £18.32 £21.98
  • Pedestal fan 16"
    Pedestal fan 16" This fan has 3 speed settings, automatic swing and adjustable head. ..
    Pedestal fan 16" This fan has 3 speed settings, automatic swing and adjustable head....
    Ex Tax: £20.83 £25.00
  • DIFFUSEAIR 100MM
    DIFFUSEAIR 100MM DiffuseAir efficiently mixes all the air in your grow room. DiffuseAir offers you total control over the climate of your grow room. It eliminates microclimates, high humidity zones and hot spots. Designed and made by Systemair. DiffuseAir eliminates harsh air streams that can cau..
    DIFFUSEAIR 100MM DiffuseAir efficiently mixes all the air in your grow room. Diff...
    Ex Tax: £30.79 £36.95
  • DIFFUSEAIR 125MM
    DIFFUSEAIR 125MM   DiffuseAir efficiently mixes all the air in your grow room. DiffuseAir offers you total control over the climate of your grow room. It eliminates microclimates, high humidity zones and hot spots. Designed and made by Systemair. DiffuseAir eliminates harsh air streams th..
    DIFFUSEAIR 125MM   DiffuseAir efficiently mixes all the air in your grow ...
    Ex Tax: £31.63 £37.95
  • Fresh 30cm (12") Air Circulator - 3 Speed
    A must-have product to ensure even room temperature and as an aid to plant transpiration. A must-have product to ensure even room temperature and as an aid to plant transpiration. The FRESH Floor Air Circulator features a high performance motor and has a stylish chrome finish, 360 degree tilt adjust..
    A must-have product to ensure even room temperature and as an aid to plant transpira...
    Ex Tax: £31.65 £37.98
  • TT-100 In Line Fan 187m3/hr
    The VENTS TT and VENTS TT PRO fans are featured with wide capabilities and high performance of axial and centrifugal fans and are specifically designed for supply and exhaust ventilation of premises requiring high pressure, powerful air flow and low noise level. The fans are c..
    The VENTS TT and VENTS TT PRO fans are featured with wide capabi...
    Ex Tax: £33.32 £39.98
  • TT-125 In Line Fan 280m3/hr
    The VENTS TT and VENTS TT PRO fans are featured with wide capabilities and high performance of axial and centrifugal fans and are specifically designed for supply and exhaust ventilation of premises requiring high pressure, powerful air flow and low noise level. The fans are c..
    The VENTS TT and VENTS TT PRO fans are featured with wide capabi...
    Ex Tax: £35.00 £42.00
  • DIFFUSEAIR 150MM
    DIFFUSEAIR 150MM DiffuseAir efficiently mixes all the air in your grow room. DiffuseAir offers you total control over the climate of your grow room. It eliminates microclimates, high humidity zones and hot spots. Designed and made by Systemair. DiffuseAir eliminates harsh air streams that can cau..
    DIFFUSEAIR 150MM DiffuseAir efficiently mixes all the air in your grow room. Diff...
    Ex Tax: £35.79 £42.95
  • DIFFUSEAIR 200MM
    DIFFUSEAIR 200MM DiffuseAir efficiently mixes all the air in your grow room. DiffuseAir offers you total control over the climate of your grow room. It eliminates microclimates, high humidity zones and hot spots. Designed and made by Systemair. DiffuseAir eliminates harsh air streams that can cau..
    DIFFUSEAIR 200MM DiffuseAir efficiently mixes all the air in your grow room. Diff...
    Ex Tax: £36.63 £43.95
  • FRESH 40cm (16") Air Circulator - 3 Speed
    FRESH 40cm (16") Air Circulator - 3 Speed A must-have product to ensure even room temperature and as an aid to plant transpiration. A must-have product to ensure even room temperature and as an aid to plant transpiration. The FRESH Floor Air Circulator features a high performance motor and has a ..
    FRESH 40cm (16") Air Circulator - 3 Speed A must-have product to ensure even room...
    Ex Tax: £40.00 £48.00
  • DIFFUSEAIR 250MM
    ​ DIFFUSEAIR 250MM DiffuseAir efficiently mixes all the air in your grow room. DiffuseAir offers you total control over the climate of your grow room. It eliminates microclimates, high humidity zones and hot spots. Designed and made by Systemair. DiffuseAir eliminates harsh air streams that ca..
    ​ DIFFUSEAIR 250MM DiffuseAir efficiently mixes all the air in your grow room....
    Ex Tax: £40.79 £48.95
  • TT-150 In Line Fan 552m3/hr
    The VENTS TT and VENTS TT PRO fans are featured with wide capabilities and high performance of axial and centrifugal fans and are specifically designed for supply and exhaust ventilation of premises requiring high pressure, powerful air flow and low noise level. The fans are c..
    The VENTS TT and VENTS TT PRO fans are featured with wide capabi...
    Ex Tax: £45.83 £55.00
  • RVK 100mm/4" A1 Fan 184m3/hr
    RVK 100mm/4" A1 Fan 184m3/hr Speed-controllable Integral thermal contacts acc.  Can be installed in any position Inclusive mounting bracket Maintenance-free and reliable The RVK sileo series is designed for installation in ducts. The casing is manufactured from PP fibreglass r..
    RVK 100mm/4" A1 Fan 184m3/hr Speed-controllable Integral thermal contacts ac...
    Ex Tax: £53.75 £64.50
  • RVK 125mm/5" A1 Fan 220m3/hr
    RVK 125mm/5" A1 Fan 220m3/hr Speed-controllable Integral thermal contacts acc.  Can be installed in any position Inclusive mounting bracket Maintenance-free and reliable The RVK sileo series is designed for installation in ducts. The casing is manufactured from PP fibreglass r..
    RVK 125mm/5" A1 Fan 220m3/hr Speed-controllable Integral thermal contacts ac...
    Ex Tax: £55.83 £67.00
  • RVK 150mm/6" A1 Fan 428m3/hr
    RVK 150mm/6" A1 Fan 428m3/hr Speed-controllable Integral thermal contacts acc.  Can be installed in any position Inclusive mounting bracket Maintenance-free and reliable The RVK sileo series is designed for installation in ducts. The casing is manufactured from PP fibreglass r..
    RVK 150mm/6" A1 Fan 428m3/hr Speed-controllable Integral thermal contacts ac...
    Ex Tax: £59.58 £71.50
  • RVK 150mm/6" L1 Fan 720m3/hr)
    RVK 150mm/6" L1 Fan 720m3/hr   Speed-controllable Integral thermal contacts acc.  Can be installed in any position Inclusive mounting bracket Maintenance-free and reliable The RVK sileo series is designed for installation in ducts. The casing is manufactured from PP fi..
    RVK 150mm/6" L1 Fan 720m3/hr   Speed-controllable Integral thermal c...
    Ex Tax: £68.75 £82.50
  • RVK 200mm/8" A1 Fan 796m3/hr
    RVK 200mm/8" A1 Fan 796m3/hr   Speed-controllable Integral thermal contacts acc.  Can be installed in any position Inclusive mounting bracket Maintenance-free and reliable The RVK sileo series is designed for installation in ducts. The casing is manufactured from PP fi..
    RVK 200mm/8" A1 Fan 796m3/hr   Speed-controllable Integral thermal c...
    Ex Tax: £68.75 £82.50
  • RVK 250mm/10" A1 Fan (780m3/hr
      RVK 250mm/10" A1 Fan (780m3/hr Speed-controllable Integral thermal contacts acc.  Can be installed in any position Inclusive mounting bracket Maintenance-free and reliable The RVK sileo series is designed for installation in ducts. The casing is manufactured from PP ..
      RVK 250mm/10" A1 Fan (780m3/hr Speed-controllable Integral thermal...
    Ex Tax: £70.83 £85.00
  • RVK 250mm/10" L1 fan  1080m3/hr
    RVK 250mm/10" L1 fan  1080m3/hr Speed-controllable Integral thermal contacts acc.  Can be installed in any position Inclusive mounting bracket Maintenance-free and reliable The RVK sileo series is designed for installation in ducts. The casing is manufactured from PP fibr..
    RVK 250mm/10" L1 fan  1080m3/hr Speed-controllable Integral thermal con...
    Ex Tax: £95.42 £114.50
  • RVK 200mm/8" L1 Fan 1008m3/hr
    RVK 200mm/8" L1 Fan 1008m3/hr   Speed-controllable Integral thermal contacts acc.  Can be installed in any position Inclusive mounting bracket Maintenance-free and reliable The RVK sileo series is designed for installation in ducts. The casing is manufactured from PP f..
    RVK 200mm/8" L1 Fan 1008m3/hr   Speed-controllable Integral thermal ...
    Ex Tax: £95.83 £115.00
  • 150mm Systemair Revolution Stratos AC 432m³/h
    Introducing the Systemair Revolution Stratos Inline Fans Lightweight & powerful, the Revolution Stratos series is designed for installation between ducting. Revolution Stratos fans have 25mm long spigot connections and are ideal for moving high volumes of air quickly. The fans have aerodyn..
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    Ex Tax: £133.29 £159.95 £179.99