I am trying to figure out which system to go with. My current system is 1 single 500 gallon tank run down the hill to a leach field. I replaced the leach field 2 years ago because it was coming out of the ground as well as had the tank cleaned out. My neighbor has told me he has fought issues with his leach field for years and has always had issues and just recently switched to an aerobic system. Really dont want to go to an aerobic system though because of the extra maintenance and its pricey. The leach field I built was about 100 and about 24 deep with 6-8 of rock under the perf pipe. So what can I do to either fix it to where the leach field will function properly for years to come. I know I probably need another tank since I have a 4 person household and only 1 tank. Throw out some ideas please