Why are you stirring up your tank just to get the dust up? If so stop and just get a gravel siphon. One of the cheap ones from the pet store (
I prefer one with a squeeze ball to start the vacuum suction) will do the job just fine. Start up the vacuum and shove the end with the large plastic end down into your gravel. You will see all kinds of particles start to be sucked up into the tube. Don't move it around while you see the particles, just leave it still in the gravel until the water runs clear. Then lift it a bit to let the gravel fall out and then shove it down into the next area right next to where you just cleaned and watch the particles come up again. Keep doing this till you have cleaned out about 1/4 - 1/2 of your gravel (or your bucket is full), then wait a week and work on another section of the tank. This is so you don't disturb too much of your good bacteria in the gravel and cause a mini-cycle in your tank.