What u guys think im good with all smells with Vents TT125 220-280m3/h and Phresh filter 500m3/h? I think 500m3/h is little bit oversized but cant find smaller Phresh filter with 125mm flange but what i read oversized filter isnt bad thing?
You can also use a larger size filter on your fan. There are adapters available to go between sizes or go to the plumbing store and get a "rubber boot" coupling. They are available in many sizes and you can easily adapt between different sizes.
Your probably best off being oversized then you can turn the power down on the fan to get to the m3/h your tent needs also when running the fan slower should cut down on noise.