Water Tanks In Caravan

Yes, best left full Steve, although no light there should be no algae. We leave ours 'as they come home' and top up before leaving next time.

Motherhen

We leave ours with whatever water is in them when we return. Fill them as required, when required. Algae won't grow in a dark area such as a black caravan water tank. Ensure connecting hoses are also opaque.

We leave our water tanks as is, but I make sure I empty the hot water system tank so the anode is not anoding while we aren't travelling.

I do drain the water tanks and HWS. The HWS to inspect and if necessary change the anode/cathode, and flush the tank.
I then re-fill the main tanks from our own household supply and leave until the next trip.
As others have said, no light should not let any little nasties grow in the tanks.

Cheers
Pop

Stephen H
if you have filled up your water tanks from a doubtful source when you have travelled I would empty them out and fill up with town water containing clourine the clourine will kill all the bugs in the water not just the algae eg like water from a bore if you go from CP TO CP i would not worry about filling the tanks
Terry

Thanks for all your replies and advice. It seems every one does a similar thing and I will do what you experienced travellers have advised.
Cheers and Happy Travels Steve

Hi Folks
Well i just learn t something iv all ways wondered if you should empty water tank or not now i know i will leave water in my tank on the camper.

Cheers

Chris