Waterproof Solar Panel

How would I make this run by a Solar Panel?
http://cgi.ebay.com.au/WATERPROOF-HEAVY-DUTY-LIVE-BAIT-PUMP-AERATOR_W0QQitemZ350015331162QQihZ022QQcategoryZ384QQssPageNameZWDVWQQrdZ1QQcmdZViewItem
Would appear the aerator is a low power device if it runs for 20 hrs on a D cell battery. For more info about Solar Panels you wish to check out this site: http://www.solarhome.org/index.asp?PageAction=VIEWCATS&Category=91
Good Luck