I just bought a house mid summer and I have been doing standard maintenance. I recently decided to get the septic pumped and I called up the old homeowners to find out where the tank is located and they gave me an approximate location. They also said the whole time they lived here they never got the tank pumped but they put septic treatment stuff in their drains. When I was digging up the yard I hit a power wire (pictured below) I continued my dig and later realized the wires had been cut and tapped off. I am actually not sure if this is an aerator or not. I just need someone to chime in. I dont think the old homeowners knew cause they had the septic tank breaker switched to on (which could increase their electric bill, right?) The first tank in line from the house also has solids nearly all the way up to the lid in it with the outside edge being clear (i'm assuming this allowed fluids to flow). The only thing I noticed this summer was a light septic smell outside the house on occasion (gone now). I am not sure if it was my system or a neighbors cause my yard looks perfectly fine with no issues. I also do not know if the second tank has a lid or not. I stopped digging for the night. Someone please chime in and help! Thanks!