CFM is the measurement you should be focusing on for a fan not static pressure. The Vortex VTX 600L is less than 300 CFM while the AC Infinity 6 inch is 402 CFM.
While the same size the AC Infinity can move over 100 more cubic feet of air per minute.
While the Vortex fan doesn’t list a db rating I can almost guarantee it’s also quieter.
CFM for a grow room can be calculated on a site that does it for you or by yourself to find that the bigger tents actually only need like mine (6x3.4xH79”) are only like 8 cfm. not much cfm is needed, but the static pressure makes the difference of the fan being able to pull air at all through the filter.
I have the S Line 600 and the pressure is 27 mmh20 which is hella strong. Unlike AC infinity, it is LOUD. Enough to make your ear drums rumble from pressure differences through out the house lol. High CFM just means it moves air fast but at lower power.
I know this much from trying PC fans as a inline fan. With nothing, a good PC fan can blow a surprising amount of air with long life spans and other nice features. Issue is, you put any type of filter - zero air movement.
With my early struggle on this, I have learned even a high static pressure fans will not move anything if the filter has only a slight but consistant layer of dust around it, clogging it. Only takes a few days or a week.
This was a pencil cup DIY filter though. I imagine this may of tought me rhe problem brand carbon filters can have too, regardless of fan. would be AWESOME if I could refill the coarse charcoal.
I read reviews that this indeed happens. Sometimes as soon as my pencil cup filter lol. I thought, nooo, not with that much more surface area?? I guess so.
So this thread turned out to be very helpful. Cool how growing has you touch on all kinds of engineering and science skills.