Grey water tank

Our caravan AOR has a flush line for the grey tank. On our return journey to home, we also dissolve a dishwasher tablet in a 500ml of hot water then put in grey tank with 10 litres of water or so (Grey water tank outlet closed ) and let it slosh around till we get home & flush it all out . .

Hi Brodie,
We have had a grey water tank for the last 5 years without any problems. Unfortunately we cant bypass ours when we don't need it so we make sure we follow a few simple rules.
We always wipe off our plates & pots etc. with paper towels & have them clean as possible before washing them. We then burn the paper towels or put them in our rubbish bag.
Don't wash any solids down the sinks. They will sit in your tank !
Our tank has been fitted on a lean towards the outlet so it drains pretty well.
We also have Hepa Valves fitted to both sinks & the shower so no smell ever comes back up the drains.
A working breather for the tank is also important to allow the drains to flow well. Ours has a shut off valve to stop it leaking while travelling. Works well.
Keep in mind stored grey water will always end up smelling bad. You should always try & dump it asap.
If it's been more than a day or two better to find a dump point. Better still don't store it longer than you need,get rid of it where you are allowed to run grey water on the ground asap.
If a grey water tank is not required at a camp we just leave the valve open & drain to a tree just like anyone without a tank.
To clean the tank, once & a while we pour pinoclean or smilar down the drains with a little water & either let it sit or drive to slosh it around a bit. Usually after a trip unless were away for a while in which case we'll clean it more often. Pretty simple really.
It is nice to be prepared for anything when we are travelling. We have stay in a few places where an installed grey water tank was required. Not that we have ever been checked on.
Hope this helps, Not sure if I covered everything though
Cheers,
Paul
PMK3AUSTRALIA

We flush a capfull of Napisan or similar into our tank to prevent odours when in use, I guess a soak with water and Napisan before emptying it for storage would work well.

Our current grey water tank has been in use for 16 years.
Never done anything to clean it and never had a need.
Cheers,
Peter
OKA196 motorhome.

On the final day of a trip we put a cap of Napisan into the sink, add hot water and drive home with the grey water tank half full and sloshing around. Controls the potential odour.