QUOTE(Melle @ Sep 18 2003, 07:47 PM)
do aquatic plants have any special needs?
Some plants need high light, people will give you all kinds of measurements on how much they really need (usually in watts/gal). Some plants do have a specific range of pH or KH that they like, or don't tolerate salt. Some need their roots buried in the gravel, others will die if you do that. There are plenty of websites that can give you that kind of information on plants...
this page has some nice pictures of plants that link to information about them.
I personally haven't even tried growing plants yet, because my 20 gallon doesn't have any lights on it... but my 5 gallon (soon to hold 2 bettas with a divider) has a light in the hood, so I've been researching plants trying to decide what to get.