And I have a Smart Roller Mat from Reef Factory. I have the M version, water flow at 8000lph and 700l of circulation. Medium stocking, very fine sand on the bottom.
I used about 20m of non-woven fabric since beggining od December. The water is clear as crystal, the salinity hasn't changed and I now only look in the sump once every 3 weeks to pour out the farts from the skimmer cup.
The roll of fleece itself is 40m long, at 20cm wide it should theoretically last for 3 months.
It works flawlessly, never jammed. Replacing the roll seems child's play, just unscrew one plastic screw, remove the basket and put the new one on.
It takes up very little space, the dimensions are only 12x25cm and I think it is very efficient at the same time.
I control the rollers and the amount of nonwoven fabric in the Smart Reef app.