Septic systems remind me of Amorphophallus titanum.  Once you get past the awful name (if you understand the latin, I'm sorry) this giant flower has many things in common with your septic.  They both smell awful (though only your spetic tank should smell), and they are both delicate flowers.  Your septic system needs particular environmental factors to grow well, just like the titan arum.  Also just like a giant flower, you should be fertilizing your septic.  I use that term loosely, but you should be using Unique Natural Products' septic line of products to help your septic grow and flourish.  Also remember that everything you put down your drains goes to your septic.  You wouldn't water a flower with bleach, so why put bleach down your drains.  Unique offers a full line of cleaning products that allow you to keep that system running well and your house looking great.