ur initial thought process was good, dont use those products, i would thouroughly rinse it out with plenty of water, and scrub it down, which will remove all the dust and dirty particles. you could use a high-pressured hose to blast the sides of the glass tank, which will remove a lot of debree, and just wipe it down. Just remove everything that could be harmful. You will need to be more efficient if you will be using the tank for saltwater, but for fresh (if the tank has just been in storage and doesnt have all that much guck in it), using hot water, and rags and paper towels. you can use windex and other things on the outside, but not on the inside, good luck with it....