Posted: Wed Dec 17, 2008 9:28 pm
Dilute bleach is generally what's recommended for a serious tank cleaning. You can use a very dilute solution (10% is about average) to wipe everything down. Then rinse very well with water and let everything air dry. I'd also replace all the media in the filters, just in case anything's in there.
You're right about not wanting residues in the tank, so I'd stick to the bleach OR vinegar route, several people have used them safely and had great results.
2 RES: Leo (f) and Ezra (m)
1 Russian Tortoise: Godzilla (m)