BBM
My septic tank has a plastic lid much like a plastic garbage can lid and is above ground. Most others that I have ever seen around here are much the same.
Mine also has a level meter hooked up with an alarm in case the liquid level rises too high. Then, it would need pumped out. I've only had this done once in the 5 years I've lived here and, I seriously don't think it was because the levels were actually too high – I think the meter was just faulty.
As for chemical treatment, we use
Rid-X. It helps the sludge break down faster.
Yeah... pretty gross.
I will take a picture of ours then and post it here.
Happy Valentine's Day btw! :heartbeat: