One added septic system input. You know those chemical potions that they sell that are supposed to rid your tank of sludge? Don't use them. Those chemicals, if they work at all keep the solids in suspension. Those solids are SUPPOSED to settle to the bottom of the tank. The only thing that should be exiting your tank and passing into the leach field is clear leachate. Any solids can potentially clog your leach field, and completely ruin your septic system.
Here's a good article: http://deansseptic.com/doanddont's.htm
Here's a good article: http://deansseptic.com/doanddont's.htm