I have been using my Reefmat 500 for 6 months more or less and I love it overall. Water is crystal clear, I don't have to change socks, some might say it even filters the water too well. My biggest issue so far is the removal of the dirty fleece when it comes time to change the roll. I've changed a roll 3 times and it has never just slid off, Ive always had to unroll a good amount of fleece to ease some of the tension(pressure? strain? not sure what the proper word is) off the center of the roll. Is it a major inconvenience? No, once very 2-3 months is not gonna kill me, but is there a way to make it slightly easier to remove the dirty fleece? Any help is greatly appreciated!