As many engineering studies and extensive field tests indicate, continuous discharge from the septic tank should be avoided. Continuous discharge causes the distribution to be limited to a few areas within the absorption field resulting in an overloading of the infiltrative surface in these areas. In order to maintain the infiltrative capacity of the soil, alternate periods of loading and resting of the leaching system should be provided. An inexpensive and trouble-free method of achieving this solution is by using a dosing tank together with an automatic dosing siphon.
http://www.promagenviro.com/products/dosing-siphons
Siphon Models: 207 212 216 308 310.5 313 316 413 417 423 430 523 630 836 1248