I normally drink a Grand Marnier in front of my tank and I have 4 or 5 diatom filters. I don't have a quarantine tank, if I did, I would fill it with ice for my Grand Marnier. I use the diatom maybe once a year just for fun because I don't have to worry about parasites. I like to use the diatom filter because it is fun to watch it rust and I love the smell of burning oil.
I have been lucky for 45 years, but I know any day my tank will crash because of parasites because I heard that it can only work for 46 years.