Originally Posted by Bimmerbill
Most of my non sewage water goes out the grey water system, which is part of the problem in winter. No hot water or anything goes down the septic line. Will have to have a plumber plumb in a valve or something that I can route shower water down the septic in the winter.
Another option (if your septic system can't handle the amount of water from showers/etc) would be to flush the toilets using warm water in the winter. Play around with it, but here's what I'd try first: Put a 100W aquarium heater in the tank (inside it's own pint-size bucket in the bottom so it never goes dry and never sees the straight incoming cold water). Set it as high as it will go (most top out at 90 deg F). If I wanted to go the extra mile, I'd insulate the inside of the tank with one of those foam "anti condensation" kits. Voila.
The foregoing idea should not
be executed by anyone
. Aquarium heaters are not certified or tested for use in this application, and lots of bad things, to include electrical shock, fire, scalding of suspended body parts, or any number of other untoward events, could result. It is dangerous and not at all a good idea