1. You can use play sand or pool sand. Carib Sea also has other colors of sand that are quite nice. Click on the fish picture:
http://www.carib-sea.com/pages/productline.html
2. If your filter causes some rippling at the water line, you probably don't need an air pump and air stone. Most folks just use them for looks.
3. If your siphon attaches to a water faucet, then you probably have a python. Most folks simply use a regular gravel vac that works on suction like when you siphon gas from a gas tank. Instead of the dirty water going down the sink, the end of the hose is in a bucket that has to be poured out.
