For example : A grow room measuring 2mtrs x 2mtrs x 2mtrs = 8mtrs cubed x30 air changes an hour = 240mtr cubed per hour will need to be ventilated ..as a rule we recommend buying a slightly larger capacity fan than you need, to allow for summer increases in temperature and or using a Carbon filter. Serving the Midlands, South East & UK

Controlling your grow room temperature whilst still ensuring that a healthy flow of fresh carbon dioxide enriched air reaches your plants is extremely important. Here at GroWell, our industry-leading range of extractor fans will help you to extract hot stale air away from your grow room and push in that all important cool fresh air. I have a 1.5x1.5 tent in which I will be running 2x 315 CMHs. I need a silent fan, I live on the first floor and surrounded my neighbors above below and on one side, I can hear them talking whens all silent sometimes. I understand I need a silenced fan and a variac/hybrid controller. So I was looking at 8" silenced fan, so I dont need to run on a high percentage and a controller. But I don't understand the differences in the controllers. The unstoppable rise of Isomax Acoustic Fans has been one of the major success stories of recent years in the UK indoor gardening market. With a reassuringly robust design and high quality components, each of the four units will comfortably help you overcome the challenges of extracting air from a modern grow room. Key features include the innovative baffle and acoustic lined chamber (much like a very large silencer) that successfully combine to minimise overall noise output whilst allowing for movement of gargantuan amounts of air. Both of the two smaller fans also provide convenient inbuilt fan speed controllers, offering even more value for money! Very highly recommended! Based in Kenilworth near Coventry, our grow shop regularly fields enquiries from customers in the Midlands and South East of England.Sealed Flange: In CarboAir filters, there is a unique feature around the flange that ensures the carbon bed is always stable and, more importantly, that no air passes through the filter without hitting the carbon. A ring of spongy synthetic material is compressed against the flange and the carbon bed, creating an air tight seal and ensuring that no stinky air will ever make its way outside your grow room. The 3-speed fan-controller offers the ability to reduce air-flow levels when it may be preferable, providing added flexibility and saving money on additional fan-controller units!

The IsoMax Acoustic Fans are a totally unique diagonal tube fan, designed to be efficient, powerful and silent. Iso-Max, like Max Fan, uses the rotor-stator system that enables it to be efficient, air performance and power consumption wise. However, Iso-Max is a particular type of fan, because it is a fan, integrated in a silencer. It has a full-metal housing and for noise reduction, a special type of foam is added. Its low weight, strong air performance and quietness makes Iso-Max the most advanced choice for a ventilation application. Avoid placing your filter directly above humidifiers, or anywhere that has a consistently high relative humidity. Deposits left from unclean or hard water will stain your equipment (like reflectors) and clog up your carbon filter. Ideally ensure the water supply is from de-ionised or RO water.

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Global Air Supplies as a company in England are relatively new, but the people behind the scenes have been active in bringing you the finest high-quality carbon filters for a long, long time. Having previously been responsible for bringing Rhino Filters and the I.W.S system to the hydroponic market, the genius that is Ian Collins has been working on something new to revolutionise the extraction side of hydroponics. Our Kit Includes: 1x Can-Fan Iso-Max Fan, 1x CarboAir 50 Carbon Filter, 1x 10m Rhino Aluminium Ducting, 2x Ducting Clips