Exactly what I do. Cuz it just makes sense to me. When I do my twice monthly water change, I like to stir everything up first by turkey basting, glass cleaning, then in mind anyway, lots more gets sucked out with the water change.Are you blasting sand/rocks daily? I could see that closing things up daily. I do aggressive type cleaning like that either the day before or during a twice monthly water change, because it does close stuff up for a bit.