I haven't but that could be helpful. I wouldn't use extra hot water then if running them. May try that next time.
Well i did vinegar and warm water ran pumps forward and reverse scrubbed and repeat....rinsed in saltwater from wc threw them in the tank after a 5min rinse and omg what a diff. In flow and appearance that bucket was nasty nasty when I got done.....something about cleaning day just makes this tank pop like literally clean and clear and under control......testing phosphate and nitrates here in a few. But here are some pics after cleaning day....Within the past year I did 2 full cleanings with citric acid (1 cup/gal), first one was a stagnant soak, second one I ran a wave maker in there for circulation, which worked mucchhh better.
My $.02