I use one of these:
https://www.onestopgrowshop.co.uk/smsco ... oller.html
Also an infinity cloudline T4 with the auto speed controller which is a good one, very quiet.
I am due to try a Rhino Fan with a built in auto controller, then was slightly cheaper than the AC Infinity at around 80-90 quid i think.
My new groom wiill have a controlled environment up to a certain range so I can more easily control my individual tents, which is the theory. I will have a fan pulling air through a filter coming into a 12m^2 space, then 3-4 tents set up all with individual set ups. This in theory also makes in easier to control one tent seperate from another. I will have another fan pulling and srubbing the air coming out of the main aread too.
May sound a lot, but in theory I can run everything at much lower speeds and pull less electric.
Treat people as if they were what they ought to be and you help them to become what they are capable of being.”
JOHANN WOLFGANG VON GOETHE
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"Insects and disease are the symptoms of a failing crop, not the cause of it. It's not the overpowering invader we must fear but the weakened condition of the victim."
William Albrecht
https://www.organacanna.co.uk/