Black and Gray tanks

[Terier]

Originally Posted by murph164

40 gallon is standard. When I am hooked to sewer I never have the Grey water tank closed. I let it run directly out. When I am traveling I put in 5 gallons of water or so, laundry soap, water softener and let it slosh around. When I get to my next hook up, I use the tank over night then drain it. Keeps it clean. I also never rely on the sensors. I listen to the black tank when flushing and when it sounds gurgle and may blow a bubble when flushing I dump. Average is 5 days. Grey tanks fill fast from the kitchen due to dishes etc. Leave them open

I don't know if I would want to see a bubble... sounds like the start of trouble brewing. On the other hand I don't know all that much about the black tank.

The black tank never been full when I dump. I do make sure it's at lease 2/3 full which takes a lot of effort with longer flushing since I camp solo and usually only 2-4 nights. Now the gray tank is another matter - no problem getting that tank filled completely.