YES!!!! I am another sourdough lover here!!!

What flour are you using for your starter?? After you use the starter to add to your bread you 'feed' the starter a few scoops of flour and water to make it paste like again... Keep it in the fridge and feed every 2-3 days if you aren't cooking any bread, everyday if you are making bread. Check out the book Wild Sourdough, it's amazing!