I use as many fast growing plants as I can fit in. Once the tank is cycled and settles down then I start switching the initial plants for the ones I actully want in the tank.
Good plants to start with would be any Hygrophilias, Water Sprite, Pennywort, Rotalas, Limnophilas and, I'm sure, many others.
Courtesy * Integrity * Perseverance * Indominable Spirit * and Self Control
Tenets of TKD